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    <title>topic Re: Extending Datastore in VI: VMware ESX™ 3.5 Discussions</title>
    <link>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021435#M101536</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Welcoem to the Forums - You can not dynamically extend a LUN from the storage side - the wat to grow a lUN is by adding an extent which means creating another LUN and in the properties of your VMFS datastore in the extents section adding another extent - &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;/P&gt;&lt;P&gt;If you find this or any other answer useful please consider awarding points by marking the answer correct or helpful&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Fri, 06 Feb 2009 13:24:40 GMT</pubDate>
    <dc:creator>weinstein5</dc:creator>
    <dc:date>2009-02-06T13:24:40Z</dc:date>
    <item>
      <title>Extending Datastore</title>
      <link>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021434#M101535</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;HI there, &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt; We have a 3 server ESX3.5 Cluster backed up by a HP StorageWorks MVA F-SCSI SAN.  &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;A LUN has been mounted as /dev/sdb, originally sitting at 500Gb. We have since extended this LUN to 1Tb, however can't work out how to get ESX to use this extra space... &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt; If i run fdisk -l, it gives  &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;BLOCKQUOTE&gt;&lt;P&gt;Disk /dev/sdb: 1099.5 GB, 1099511627776 bytes &lt;BR /&gt; 255 heads, 63 sectors/track, 133674 cylinders &lt;BR /&gt; Units = cylinders of 16065 * 512 = 8225280 bytes &lt;BR /&gt; Device Boot    Start       End    Blocks   Id  System &lt;BR /&gt; /dev/sdb1             1     65270 524281211   fb  Unknown&lt;/P&gt;&lt;/BLOCKQUOTE&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;This shows that it sees the extra space, but cant use it. I found kittara's thread &lt;A href="https://communities.vmware.com/t-98477"&gt;here&lt;/A&gt;, however when i follow the instructions through,ESX mounts it as a completey seperate datastore... &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;The other thing i've looked at is under Datastore properties,  there is an "Add EXtent" button. I clicked that, and selected the additional space on the lun, however there's a warning there:&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;BLOCKQUOTE&gt;&lt;P&gt;The Current Disk layout will be destroyed. All file systems and data will be permanently lost.&lt;/P&gt;&lt;/BLOCKQUOTE&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt; Is this true? Will it completely delete all VM data currently on that LUN? &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Is there anyway i can extend the existing datastore???  &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;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Any info appreicated. &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;cheers&lt;/P&gt;&lt;P&gt;Gavin &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 06 Feb 2009 13:21:24 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021434#M101535</guid>
      <dc:creator>fatmcgav88</dc:creator>
      <dc:date>2009-02-06T13:21:24Z</dc:date>
    </item>
    <item>
      <title>Re: Extending Datastore</title>
      <link>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021435#M101536</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Welcoem to the Forums - You can not dynamically extend a LUN from the storage side - the wat to grow a lUN is by adding an extent which means creating another LUN and in the properties of your VMFS datastore in the extents section adding another extent - &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;/P&gt;&lt;P&gt;If you find this or any other answer useful please consider awarding points by marking the answer correct or helpful&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 06 Feb 2009 13:24:40 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021435#M101536</guid>
      <dc:creator>weinstein5</dc:creator>
      <dc:date>2009-02-06T13:24:40Z</dc:date>
    </item>
    <item>
      <title>Re: Extending Datastore</title>
      <link>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021436#M101537</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;OK, well i can see the Extent under the Add Extents screen, but what concerns me is where it says it's going to wipe out all existing data... is this correct?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt; The attached jpeg better illustrates what i mean... &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Cheers &lt;/P&gt;&lt;P&gt;Gavin&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 06 Feb 2009 13:40:36 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021436#M101537</guid>
      <dc:creator>fatmcgav88</dc:creator>
      <dc:date>2009-02-06T13:40:36Z</dc:date>
    </item>
    <item>
      <title>Re: Extending Datastore</title>
      <link>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021437#M101538</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;OK, i found the following KB Article... &lt;A href="http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&amp;amp;docType=kc&amp;amp;externalId=1002163&amp;amp;sliceId=1&amp;amp;docTypeID=DT_KB_1_1&amp;amp;dialogID=2332700&amp;amp;stateId=1%200%202336625"&gt;The Add Extent wizard includes a warning message regarding data loss after extending a LUN.&lt;/A&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;However on the above ss, the Target Identifier appears to be the same as the existing Extent, so does that mean it will over-write all existing data?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt; Confused &lt;img id="smileysad" class="emoticon emoticon-smileysad" src="https://communities.vmware.com/i/smilies/16x16_smiley-sad.png" alt="Smiley Sad" title="Smiley Sad" /&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Cheers&lt;/P&gt;&lt;P&gt;Gavin&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 06 Feb 2009 14:15:01 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021437#M101538</guid>
      <dc:creator>fatmcgav88</dc:creator>
      <dc:date>2009-02-06T14:15:01Z</dc:date>
    </item>
    <item>
      <title>Re: Extending Datastore</title>
      <link>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021438#M101539</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;The key to that KB article is in the quote -"&lt;SPAN __default_attr="Arial" __jive_macro_name="font"&gt;&lt;/SPAN&gt;&lt;SPAN __default_attr="2" __jive_macro_name="size"&gt;f you look in Target Identifier, you see the &lt;SPAN __default_attr="Courier New" __jive_macro_name="font"&gt;vmhbaW:X:Y:Z &lt;/SPAN&gt; where the extent is to be placed. If your original disk was &lt;SPAN __default_attr="Courier New" __jive_macro_name="font"&gt;vmhba1:0:0:1 &lt;/SPAN&gt;, that extent is created on &lt;SPAN __default_attr="Courier New" __jive_macro_name="font"&gt;vmhba1:0:0:2 &lt;/SPAN&gt;.&lt;/SPAN&gt;&lt;SPAN __jive_macro_name="font"&gt;&lt;/SPAN&gt;" the syntax is for the vmhbaw.x.y.z is w is the ESX Host HBA, x is the Storage Processor, y is the LUN and z is the partion on the LUN - in your case the storage is identified as vmhba0:1:1 so when you add the extent you will have the original VMFS datastore on vmhba0:1:1:1 and the extent will be on vmhba0:1:1:2 - &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;If you find this or any other answer useful please consider awarding points by marking the answer correct or helpful&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 06 Feb 2009 14:41:43 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021438#M101539</guid>
      <dc:creator>weinstein5</dc:creator>
      <dc:date>2009-02-06T14:41:43Z</dc:date>
    </item>
    <item>
      <title>Re: Extending Datastore</title>
      <link>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021439#M101540</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;So what you're saying is that it will be added to a new extent on 0:1:1:2... Makes sense, and i think the attached screenshot backs it up... &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt; I clicked past the Warning screen on the add extents, double checked the size and stopped at the complete screen - and it's showing an additional extent on 0:1:1:2...&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;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;So as one final check before i click complete, it's definately not going to remove the existing data, just format the new extent???&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Sorry for asking again, just dont want to click the wrong thing and wipe everything out... &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Cheers&lt;/P&gt;&lt;P&gt;Gavin &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 06 Feb 2009 14:57:35 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021439#M101540</guid>
      <dc:creator>fatmcgav88</dc:creator>
      <dc:date>2009-02-06T14:57:35Z</dc:date>
    </item>
    <item>
      <title>Re: Extending Datastore</title>
      <link>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021440#M101541</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;I dont really like using extents, it can become really confusing when multiple LUNs are used to make up one datastore, and I think it probably effects performance. If I was in this situation I would create a brand new LUN of 1TB then storage-vmotion the VMs onto the new LUN.&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 06 Feb 2009 15:25:21 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021440#M101541</guid>
      <dc:creator>JoJoGabor</dc:creator>
      <dc:date>2009-02-06T15:25:21Z</dc:date>
    </item>
    <item>
      <title>Re: Extending Datastore</title>
      <link>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021441#M101542</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;JoJo,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt; Cheers for the idea... Might be something to look at in the future, but for now, i need to get it working this way... &lt;img id="smileysad" class="emoticon emoticon-smileysad" src="https://communities.vmware.com/i/smilies/16x16_smiley-sad.png" alt="Smiley Sad" title="Smiley Sad" /&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Cheers&lt;/P&gt;&lt;P&gt;Gavin&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 06 Feb 2009 15:27:45 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021441#M101542</guid>
      <dc:creator>fatmcgav88</dc:creator>
      <dc:date>2009-02-06T15:27:45Z</dc:date>
    </item>
    <item>
      <title>Re: Extending Datastore</title>
      <link>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021442#M101543</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Ok, in the end i plucked up the courage and just went for it... &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;And it WORKED!!!&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;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;SO i now have an enlarged shared datastore, which all 3 nodes can now see... &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Happy days... &lt;img id="smileyhappy" class="emoticon emoticon-smileyhappy" src="https://communities.vmware.com/i/smilies/16x16_smiley-happy.png" alt="Smiley Happy" title="Smiley Happy" /&gt;&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;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Cheers for all the help..&lt;/P&gt;&lt;P&gt;Gavin&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 06 Feb 2009 16:19:40 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021442#M101543</guid>
      <dc:creator>fatmcgav88</dc:creator>
      <dc:date>2009-02-06T16:19:40Z</dc:date>
    </item>
    <item>
      <title>Re: Extending Datastore</title>
      <link>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021443#M101544</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Glad it worked - &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;/P&gt;&lt;P&gt;If you find this or any other answer useful please consider awarding points by marking the answer correct or helpful&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 06 Feb 2009 16:33:48 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VI-VMware-ESX-3-5-Discussions/Extending-Datastore/m-p/2021443#M101544</guid>
      <dc:creator>weinstein5</dc:creator>
      <dc:date>2009-02-06T16:33:48Z</dc:date>
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