I don't often touch this part of vSphere; so I just want to know if I'm on solid ground. I need to consolidate a VM that has six VMDK files residing on several datastores. None of the VMDK files is over a TB. One of the underlying datastores could host all of the files if I expand it to 2.5TB from its current 1.5TB size. I have room on my iSCSI SAN to increase the size of the underlying SAN volume to accommodate the increase in the datastore. When I did a dry run on the SAN volume change, the SAN asked me if I really want to do this, because some OSs can't support a volume over 2TB. So I checked the vSphere 5.1 max configs and confirmed this:
It says to me that VMFS can handle my underlying SAN volume if I expand the SAN volume to 2.5TB, but I don't know what that value is for "Raw Device Mapping size" and whether that pertains to my situation. Naturally, I'm not doing anything until somebody who does this part of vSphere more and better than I do tells me I'm good to go. Thanks!
