Extend Dell MD3000i Virtual Disk LUN Size
I have had the need recently to expand a LUN on a Dell MD3000i SAN to above 2TB that is presented to VMWare ESX 5.1 hosts. There are a few caveats here: The VMWare datastore for 2TB+ LUNs must be VMFS-5 as it is now GPT based, not MBR. This can be updated on the fly without shutting down VMs (Configuration -> Storage, Click the Datastore -> “Upgrade to VMFS-5”) Expanding the virtual disks on MD3000i’s can only be done in CLI. First, add your new physical disks to the box and add them to the appropriate RAID volume group. Next, you will be presented your space as “Free Capacity” - copy down the size of this in GB. ...