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    <title>topic Re: vSphere Read Cache - no disk is found in ESXi Discussions</title>
    <link>https://communities.vmware.com/t5/ESXi-Discussions/vSphere-Read-Cache-no-disk-is-found/m-p/2674142#M259301</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;I think Pernix has already put a partition on the disks, and since vFRC uses a dedicated filesystem, it might not able to detect this disk as usable. Perhaps you can use some kind of partition tool (gParted, for example), you might be able to remove the current partition layout and try it again.&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Mon, 02 Dec 2013 17:21:09 GMT</pubDate>
    <dc:creator>tomtom901</dc:creator>
    <dc:date>2013-12-02T17:21:09Z</dc:date>
    <item>
      <title>vSphere Read Cache - no disk is found</title>
      <link>https://communities.vmware.com/t5/ESXi-Discussions/vSphere-Read-Cache-no-disk-is-found/m-p/2674141#M259300</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Hi all,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;ESXi 5.5 ent+&lt;/P&gt;&lt;P&gt;HP BL460c Gen8 with P220i array controller&lt;/P&gt;&lt;P&gt;Intel SSD DC S3700 200 GB (Intel disk is supported, also tried with Samsung 960 GB SSD)&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;I have a problem with adding a SSD disk in web client. I click Manage - Settings - Virtual Flash Resource Management - Add capacity, but the list i empty.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Both disks are visible if looking on storage adapters, it is fully possible to add them as a datastore, which I tried on the Samsung without any success.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;The disks have been used for PernixData evaluation and worked well there. &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Any suggestions?&lt;/P&gt;&lt;P&gt;&lt;BR /&gt;Thanks!&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Mon, 02 Dec 2013 16:24:41 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/ESXi-Discussions/vSphere-Read-Cache-no-disk-is-found/m-p/2674141#M259300</guid>
      <dc:creator>BjornJohansson</dc:creator>
      <dc:date>2013-12-02T16:24:41Z</dc:date>
    </item>
    <item>
      <title>Re: vSphere Read Cache - no disk is found</title>
      <link>https://communities.vmware.com/t5/ESXi-Discussions/vSphere-Read-Cache-no-disk-is-found/m-p/2674142#M259301</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;I think Pernix has already put a partition on the disks, and since vFRC uses a dedicated filesystem, it might not able to detect this disk as usable. Perhaps you can use some kind of partition tool (gParted, for example), you might be able to remove the current partition layout and try it again.&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Mon, 02 Dec 2013 17:21:09 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/ESXi-Discussions/vSphere-Read-Cache-no-disk-is-found/m-p/2674142#M259301</guid>
      <dc:creator>tomtom901</dc:creator>
      <dc:date>2013-12-02T17:21:09Z</dc:date>
    </item>
    <item>
      <title>Re: vSphere Read Cache - no disk is found</title>
      <link>https://communities.vmware.com/t5/ESXi-Discussions/vSphere-Read-Cache-no-disk-is-found/m-p/2674143#M259302</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Found the issue: The drive was marked as not local. Also it may be that the drive is not flagged as an SSD (not in my case though).&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;~ # esxcli storage core device list -d naa.600508b1001c4fb788c917f46bf2a2f5&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&lt;BR /&gt;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Display Name: HP Serial Attached SCSI Disk (naa.600508b1001c4fb788c917f46bf2a2f5)&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Has Settable Display Name: true&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Size: 915683&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Device Type: Direct-Access&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Multipath Plugin: NMP&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Devfs Path: /vmfs/devices/disks/naa.600508b1001c4fb788c917f46bf2a2f5&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Vendor: HP&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Model: LOGICAL VOLUME&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Revision: 4.68&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; SCSI Level: 5&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Is Pseudo: false&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Status: degraded&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Is RDM Capable: true&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; &lt;STRONG style="color: #ff0000;"&gt;Is Local: false&lt;/STRONG&gt;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Is Removable: false&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;STRONG style="font-size: 8pt; font-family: 'courier new', courier;"&gt;&amp;nbsp;&amp;nbsp; &lt;SPAN style="color: #ff0000;"&gt;Is SSD: true&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Is Offline: false&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Is Perennially Reserved: false&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Queue Full Sample Size: 0&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Queue Full Threshold: 0&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Thin Provisioning Status: unknown&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Attached Filters:&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; VAAI Status: unknown&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Other UIDs: vml.0200010000600508b1001c4fb788c917f46bf2a2f54c4f47494341&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Is Local SAS Device: false&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; Is Boot USB Device: false&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier; font-size: 8pt;"&gt;&amp;nbsp;&amp;nbsp; No of outstanding IOs with competing worlds: 32&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;In order to mark it as local I ran this command (note that the syntax of option sub-command is wrong in the documentation, I posted the correct one):&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: 'courier new', courier;"&gt;esxcli storage nmp satp rule add -s VMW_SATP_LOCAL --device naa.600508b1001c277a2d4d5e0285b4f6db --option="enable_local"&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;After a reboot it was possible to add the drive as flash device.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Thanks&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 04 Dec 2013 15:45:38 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/ESXi-Discussions/vSphere-Read-Cache-no-disk-is-found/m-p/2674143#M259302</guid>
      <dc:creator>BjornJohansson</dc:creator>
      <dc:date>2013-12-04T15:45:38Z</dc:date>
    </item>
    <item>
      <title>Re: vSphere Read Cache - no disk is found</title>
      <link>https://communities.vmware.com/t5/ESXi-Discussions/vSphere-Read-Cache-no-disk-is-found/m-p/2674144#M259303</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Just unclaim and claiming the device should make non-local to local. Instead reboot. But there should not be any active local locks in the device.&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Sat, 22 Feb 2014 08:55:33 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/ESXi-Discussions/vSphere-Read-Cache-no-disk-is-found/m-p/2674144#M259303</guid>
      <dc:creator>admin</dc:creator>
      <dc:date>2014-02-22T08:55:33Z</dc:date>
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