Comments on: Using iSCSI to get some big ole disk in a Virtual Machine http://www.2vcps.com/2009/08/28/using-iscsi-to-get-some-big-ole-disk-in-a-virtual-machine/ Mon, 02 Jan 2012 06:16:00 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Jon Owings http://www.2vcps.com/2009/08/28/using-iscsi-to-get-some-big-ole-disk-in-a-virtual-machine/comment-page-1/#comment-73 Jon Owings Sat, 29 Aug 2009 15:04:56 +0000 http://www.2vcps.com/?p=113#comment-73 Check the vSphere max rdm size. http://www.vmware.com/pdf/vsphere4/r40/vsp_40_config_max.pdf Page 3 RDM is max 2TB minus 512 Kb. Is there another method? Check the vSphere max rdm size.
http://www.vmware.com/pdf/vsphere4/r40/vsp_40_config_max.pdf
Page 3 RDM is max 2TB minus 512 Kb.

Is there another method?

]]> By: Jon Owings http://www.2vcps.com/2009/08/28/using-iscsi-to-get-some-big-ole-disk-in-a-virtual-machine/comment-page-1/#comment-72 Jon Owings Sat, 29 Aug 2009 12:35:09 +0000 http://www.2vcps.com/?p=113#comment-72 In vSphere the RDM creates a pointer file that "claims" to be the size of the RDM. I don't think it actually uses that space. Even at the highest block size a file over 2TB is not allowed. Unless there is another trick to RDM's that I didn't know. All datastores and RDM's under 2TB we setup the normal way with the Software iSCSI initiator on the host. In vSphere the RDM creates a pointer file that “claims” to be the size of the RDM. I don’t think it actually uses that space. Even at the highest block size a file over 2TB is not allowed. Unless there is another trick to RDM’s that I didn’t know. All datastores and RDM’s under 2TB we setup the normal way with the Software iSCSI initiator on the host.

]]> By: Andrew Miller http://www.2vcps.com/2009/08/28/using-iscsi-to-get-some-big-ole-disk-in-a-virtual-machine/comment-page-1/#comment-71 Andrew Miller Sat, 29 Aug 2009 01:57:24 +0000 http://www.2vcps.com/?p=113#comment-71 Hmm....I feel like I'm missing something.....but why not just use an RDM? Less setup? (i.e. just an initiator inside the VM than iSCSI on each ESX host) Hmm….I feel like I’m missing something…..but why not just use an RDM? Less setup? (i.e. just an initiator inside the VM than iSCSI on each ESX host)

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