https://wiki.restarters.net/index.php?title=All_about_SSDs&feed=atom&action=historyAll about SSDs - Revision history2024-03-29T09:33:15ZRevision history for this page on the wikiMediaWiki 1.38.2https://wiki.restarters.net/index.php?title=All_about_SSDs&diff=6694&oldid=prevPhilip at 21:37, 9 October 20222022-10-09T21:37:38Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 21:37, 9 October 2022</td>
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<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Solid State Disks (SSDs) come in a variety of shapes and sizes and they work in a totally different way to a conventional hard disk. Whether you're replacing a failed SSD or upgrading from a hard disk, an understanding of these things will help you achieve a successful outcome.</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><div class="showtoc"></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><div class="showtoc"></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>__TOC__</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>__TOC__</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></div></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></div></div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">Solid State Disks (SSDs) come in a variety of shapes and sizes and they work in a totally different way to a conventional hard disk. Whether you're replacing a failed SSD or upgrading from a hard disk, an understanding of these things will help you achieve a successful outcome.</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Summary==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Summary==</div></td></tr>
</table>Philiphttps://wiki.restarters.net/index.php?title=All_about_SSDs&diff=6659&oldid=prevPhilip at 15:42, 28 September 20222022-09-28T15:42:49Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:42, 28 September 2022</td>
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<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">__TOC__</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></div></ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Solid State Disks (SSDs) come in a variety of shapes and sizes and they work in a totally different way to a conventional hard disk. Whether you're replacing a failed SSD or upgrading from a hard disk, an understanding of these things will help you achieve a successful outcome.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Solid State Disks (SSDs) come in a variety of shapes and sizes and they work in a totally different way to a conventional hard disk. Whether you're replacing a failed SSD or upgrading from a hard disk, an understanding of these things will help you achieve a successful outcome.</div></td></tr>
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</table>Philiphttps://wiki.restarters.net/index.php?title=All_about_SSDs&diff=6466&oldid=prevPhilip: /* Problems and Solutions */2022-07-23T08:18:11Z<p><span dir="auto"><span class="autocomment">Problems and Solutions</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 08:18, 23 July 2022</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>An SSD should give trouble-free service and in particular it will be much less prone to damage through physical shocks than a hard disk. Nevertheless if it should fail it may do so catastrophically, with little chance of getting your data back. Bear this in mind if your data is vital to you, and make sure you back it up regularly.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>An SSD should give trouble-free service and in particular it will be much less prone to damage through physical shocks than a hard disk. Nevertheless if it should fail it may do so catastrophically, with little chance of getting your data back. Bear this in mind if your data is vital to you, and make sure you back it up regularly.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>SSD vendors often supply a SSD utility programme which can be found on their support website. This includes a health monitor program and S.M.A.R.T Diagnostic Tool. ([[Wikipedia:S.M.A.R.T|S.M.A.R.T]] is an industry standard disk reliability <del style="font-weight: bold; text-decoration: none;">test program</del>. If any problems are encountered, run such a program first and contact the vendors' technical support immediately with the test results, which will greatly assist your support case.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>SSD vendors often supply a SSD utility programme which can be found on their support website. This includes a health monitor program and S.M.A.R.T Diagnostic Tool. ([[Wikipedia:S.M.A.R.T|S.M.A.R.T]] is an industry standard disk reliability <ins style="font-weight: bold; text-decoration: none;">monitoring system</ins>.<ins style="font-weight: bold; text-decoration: none;">) </ins>If any problems are encountered, run such a program first and contact the vendors' technical support immediately with the test results, which will greatly assist your support case.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>If you are a Linux user there are utilities you can use described in this [http://www.howtogeek.com/howto/37659/the-beginners-guide-to-linux-disk-utilities/ How-To-Geek article].</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>If you are a Linux user there are utilities you can use described in this [http://www.howtogeek.com/howto/37659/the-beginners-guide-to-linux-disk-utilities/ How-To-Geek article].</div></td></tr>
</table>Philiphttps://wiki.restarters.net/index.php?title=All_about_SSDs&diff=3751&oldid=prevPhilip: Definition of SATA converted to Glossary reference.2020-12-10T09:06:52Z<p>Definition of SATA converted to Glossary reference.</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 09:06, 10 December 2020</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===2.5" SATA===</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===2.5" SATA===</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>SATA <del style="font-weight: bold; text-decoration: none;">(or Serial Advanced Technology Attachment)</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">2.5" [[Glossary:SATA|</ins>SATA<ins style="font-weight: bold; text-decoration: none;">]] SSDs </ins>are identical in size<ins style="font-weight: bold; text-decoration: none;">, </ins>shape and in the type of connector to <ins style="font-weight: bold; text-decoration: none;">eqivalent </ins>hard drives, but they are lighter and usually only 7mm thick, whereas 2.5" hard drives can be up to 15mm for the higher capacities. Therefore you may need to add some kind of packing if upgrading a 2.5" hard drive to an SSD in order to retain it in its bay.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">These </del>are identical in size <del style="font-weight: bold; text-decoration: none;">and </del>shape and in the type of connector to <del style="font-weight: bold; text-decoration: none;">2.5" </del>hard drives, but they are lighter and usually only 7mm thick, whereas 2.5" hard drives can be up to 15mm for the higher capacities. Therefore you may need to add some kind of packing if upgrading a 2.5" hard drive to an SSD in order to retain it in its bay.</div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===1.8" MicroSATA or μSATA===</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===1.8" MicroSATA or μSATA===</div></td></tr>
</table>Philiphttps://wiki.restarters.net/index.php?title=All_about_SSDs&diff=3750&oldid=prevGeoff-1269: /* 2.5" SATA */2020-12-10T07:32:42Z<p><span dir="auto"><span class="autocomment">2.5" SATA</span></span></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===2.5" SATA===</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===2.5" SATA===</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">SATA (or Serial Advanced Technology Attachment)</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>These are identical in size and shape and in the type of connector to 2.5" hard drives, but they are lighter and usually only 7mm thick, whereas 2.5" hard drives can be up to 15mm for the higher capacities. Therefore you may need to add some kind of packing if upgrading a 2.5" hard drive to an SSD in order to retain it in its bay.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>These are identical in size and shape and in the type of connector to 2.5" hard drives, but they are lighter and usually only 7mm thick, whereas 2.5" hard drives can be up to 15mm for the higher capacities. Therefore you may need to add some kind of packing if upgrading a 2.5" hard drive to an SSD in order to retain it in its bay.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
</table>Geoff-1269https://wiki.restarters.net/index.php?title=All_about_SSDs&diff=3035&oldid=prevPleriche: /* Under the Bonnet */2019-12-09T15:01:47Z<p><span dir="auto"><span class="autocomment">Under the Bonnet</span></span></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The way in which an SSD works is radically different from a hard disk is several respects:</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The way in which an SSD works is radically different from a hard disk is several respects:</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* An SSD stores data as electrostatic charges on a silicon chip whereas a hard disk stores it as patterns of magnetism in a spinning magnetic disk.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* An SSD stores data as electrostatic charges on a silicon chip whereas a hard disk stores it as patterns of magnetism in a spinning magnetic disk.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* When you write data to a hard disk it simply overwrites any previous data in the same location on the disk. But you can't write zeros to an SSD, you can only write ones. (All data consists of ones and zeros). Hence the area you want to write to has to be erased (set to all zeros) before you start.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* When you write data to a hard disk it simply overwrites any previous data in the same location on the disk <ins style="font-weight: bold; text-decoration: none;">by remagnetising it with the new data</ins>. But you can't write zeros to an SSD, you can only write ones. (All data consists of ones and zeros). Hence the area you want to write to has to be erased (set to all zeros) before you start.</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* You can't erase a little bit of an SSD here and a little bit there. It only allows you to erase quite a large block (measured in [[Glossary:MB|megabytes]]) of memory at a time. (This is simply one of the trade-offs which has allowed vast storage capacities to be achieved.)</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* On a hard disk, reading and writing take the same length of time (unless it's reading a marginal block requiring retries and error correction). Reading an SSD is really fast, but writing is considerably slower and erasing is slower still.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* On a hard disk, reading and writing take the same length of time (unless it's reading a marginal block requiring retries and error correction). Reading an SSD is really fast, but writing is considerably slower and erasing is slower still.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">* You can't erase a little bit of an SSD here and a little bit there. It only allows you to erase quite a large block (measured in [[Glossary:MB|megabytes]]) of memory at a time. (This is simply one of the trade-offs which has allowed fast storage capacities to be achieved.)</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* You can write to a hard disk as many times as you like without wearing out the magnetic surface, but writing to an SSD causes wear. An SSD will therefore choose for itself where to put your data and remember where that was, so as to spread out the wear. This is known as wear-levelling.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* You can write to a hard disk as many times as you like without wearing out the magnetic surface, but writing to an SSD causes wear. An SSD will therefore choose for itself where to put your data and remember where that was, so as to spread out the wear. This is known as wear-levelling.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>A consequence of all this is that as you create, edit and delete files, more and more blocks of storage will contain some data which is still current and quite a lot which is not (deleted and old versions of files, known as "stale" data). Eventually you would end up with no empty blocks to write new data to even though the SSD might only be half full of current data. To deal with this problem the operating system (Windows, MacOS or Linux) tells the SSD which data is no longer needed through a process known as TRIM. As a background task, the SSD then tries to consolidate the current data into fewer blocks, freeing up blocks which can be erased and <del style="font-weight: bold; text-decoration: none;">re-used</del>. This process is known as garbage collection.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>A consequence of all this is that as you create, edit and delete files, more and more blocks of storage will contain some data which is still current and quite a lot which is not (deleted and old versions of files, known as "stale" data). Eventually you would end up with no empty blocks to write new data to even though the SSD might only be half full of current data. To deal with this problem the operating system (Windows, MacOS or Linux) tells the SSD which data is no longer needed through a process known as TRIM. As a background task, the SSD then tries to consolidate the current data into fewer blocks, freeing up blocks which can be erased and <ins style="font-weight: bold; text-decoration: none;">made available for reuse</ins>. This process is known as garbage collection.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>All this represents quite a lot of work for an SSD, keeping track of where it's put all your data and which bits of it are still needed and which aren't. So if anything goes wrong it can go very badly wrong, leaving the SSD totally confused and no longer able to operate. This might happen, for example, if power is suddenly lost or a power surge occurs while the SSD was in the middle of doing garbage collection. SSDs (certainly the better ones) are designed to cope with such an eventuality but it does occasionally happen. By contrast, when a hard disk fails it often does so more gracefully, giving increasingly frequent read errors and so allowing you more chance to recover your data. A hard disk may therefore be more suitable than an SSD for backup.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>All this represents quite a lot of work for an SSD, keeping track of where it's put all your data and which bits of it are still needed and which aren't. So if anything goes wrong it can go very badly wrong, leaving the SSD totally confused and no longer able to operate. This might happen, for example, if power is suddenly lost or a power surge occurs while the SSD was in the middle of doing garbage collection. SSDs (certainly the better ones) are designed to cope with such an eventuality but it does occasionally happen. By contrast, when a hard disk fails it often does so more gracefully, giving increasingly frequent read errors and so allowing you more chance to recover your data. A hard disk may therefore be more suitable than an SSD for backup.</div></td></tr>
</table>Plerichehttps://wiki.restarters.net/index.php?title=All_about_SSDs&diff=3018&oldid=prevPleriche at 21:31, 11 October 20192019-10-11T21:31:15Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 21:31, 11 October 2019</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Intermittent freezing or blue screen'''</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Intermittent freezing or blue screen'''</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">'</del>Intermittent freezing can sometimes be caused by a conflict <del style="font-weight: bold; text-decoration: none;">with </del>the way the host SATA controller deals with power management for the SSD. AHCI Link Power Management is a technique where the SATA AHCI controller puts the SATA link to the SSD into a very low power state when there is no <del style="font-weight: bold; text-decoration: none;">IO (input/output) </del>activity for a period of time. The controller automatically puts the link back into active power state when the workload resumes<del style="font-weight: bold; text-decoration: none;">. This is done to save power consumption by the SSD</del>. On some host computers this can cause the SSD to freeze intermittently when returning to a full power state. (Source: [http://www.sevenforums.com/tutorials/177819-ahci-link-power-management-enable-hipm-dipm.html SanDisk])</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Intermittent freezing can sometimes be caused by a conflict <ins style="font-weight: bold; text-decoration: none;">in </ins>the way the host <ins style="font-weight: bold; text-decoration: none;">[[Glossary:</ins>SATA<ins style="font-weight: bold; text-decoration: none;">|SATA]] </ins>controller deals with power management for the SSD. <ins style="font-weight: bold; text-decoration: none;">[[Glossary:</ins>AHCI<ins style="font-weight: bold; text-decoration: none;">|AHCI]] </ins>Link Power Management is a technique where the SATA AHCI controller puts the SATA link to the SSD into a very low power state when there is no activity for a period of time <ins style="font-weight: bold; text-decoration: none;">in order to save power (and battery life)</ins>. The controller automatically puts the link back into active power state when the workload resumes. On some host computers this can cause the SSD to freeze intermittently when returning to a full power state. (Source: [http://www.sevenforums.com/tutorials/177819-ahci-link-power-management-enable-hipm-dipm.html SanDisk])</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==External links==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==External links==</div></td></tr>
</table>Plerichehttps://wiki.restarters.net/index.php?title=All_about_SSDs&diff=3015&oldid=prevPhilip: /* Under the Bonnet */2019-10-11T20:17:45Z<p><span dir="auto"><span class="autocomment">Under the Bonnet</span></span></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* When you write data to a hard disk it simply overwrites any previous data in the same location on the disk. But you can't write zeros to an SSD, you can only write ones. (All data consists of ones and zeros). Hence the area you want to write to has to be erased (set to all zeros) before you start.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* When you write data to a hard disk it simply overwrites any previous data in the same location on the disk. But you can't write zeros to an SSD, you can only write ones. (All data consists of ones and zeros). Hence the area you want to write to has to be erased (set to all zeros) before you start.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* On a hard disk, reading and writing take the same length of time (unless it's reading a marginal block requiring retries and error correction). Reading an SSD is really fast, but writing is considerably slower and erasing is slower still.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* On a hard disk, reading and writing take the same length of time (unless it's reading a marginal block requiring retries and error correction). Reading an SSD is really fast, but writing is considerably slower and erasing is slower still.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* You can't erase a little bit of an SSD here and a little bit there. It only allows you to erase quite a large block (measured in [[Glossary:MB|megabytes]]) of memory at a time. (This is simply one of the trade-offs which has allowed fast storage capacities <del style="font-weight: bold; text-decoration: none;">t </del>be achieved.)</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* You can't erase a little bit of an SSD here and a little bit there. It only allows you to erase quite a large block (measured in [[Glossary:MB|megabytes]]) of memory at a time. (This is simply one of the trade-offs which has allowed fast storage capacities <ins style="font-weight: bold; text-decoration: none;">to </ins>be achieved.)</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* You can write to a hard disk as many times as you like without wearing out the magnetic surface, but writing to an SSD causes wear. An SSD will therefore choose for itself where to put your data and remember where that was, so as to spread out the wear. This is known as wear-levelling.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* You can write to a hard disk as many times as you like without wearing out the magnetic surface, but writing to an SSD causes wear. An SSD will therefore choose for itself where to put your data and remember where that was, so as to spread out the wear. This is known as wear-levelling.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
</table>Philiphttps://wiki.restarters.net/index.php?title=All_about_SSDs&diff=3011&oldid=prevPleriche: /* NGSFF or NF1 */2019-10-11T15:41:08Z<p><span dir="auto"><span class="autocomment">NGSFF or NF1</span></span></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===NGSFF or NF1===</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===NGSFF or NF1===</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This is yet another type of SSD, slightly larger than M.2 but still using an M-key connector. However, they are not compatible and are mainly used in servers <del style="font-weight: bold; text-decoration: none;">which </del>might have a tray containing a number of such cards.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This is yet another type of SSD, slightly larger than M.2 but still using an M-key connector. However, they are not compatible and are mainly used in servers<ins style="font-weight: bold; text-decoration: none;">. Such a server </ins>might have a tray containing a number of such cards.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Under the Bonnet==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Under the Bonnet==</div></td></tr>
</table>Plerichehttps://wiki.restarters.net/index.php?title=All_about_SSDs&diff=3010&oldid=prevPleriche: /* M.2 */2019-10-11T15:38:20Z<p><span dir="auto"><span class="autocomment">M.2</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:38, 11 October 2019</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>NGFF is another name for M.2.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>NGFF is another name for M.2.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Beware: the B- and M-key positions are almost symetrically placed, which means that you may be able to force a B-key card upside down into an M-key connector (or vice versa) if you mistakenly purchased the wrong sort. Don't do it! There is a severe risk that you will kill both the M.2 device and the circuitry on the motherboard behind the M.2 slot.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Beware: the B- and M-key positions are almost symetrically placed, which means that you may be able to force a B-key card upside down into an M-key connector (or vice versa) if you mistakenly purchased the wrong sort. Don't do it! There is a severe risk that you will kill both the M.2 device and the circuitry on the motherboard behind the M.2 slot<ins style="font-weight: bold; text-decoration: none;">, as well as physically damaging the slot itself</ins>.</div></td></tr>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>====B-key====</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>====B-key====</div></td></tr>
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