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  • 1.  VM : Virtual Disk related

    Posted Sep 12, 2011 04:06 PM

    Can I create a VMware Virtual disk of size 2 TB ?

    If no, why ?

    version 4, 5



  • 2.  RE: VM : Virtual Disk related
    Best Answer

    Posted Sep 12, 2011 04:07 PM

    Hello.

    VMDK files can only be 2TB - 512 bytes maximum in vSphere 4 or vSphere 5.

    Good Luck!



  • 3.  RE: VM : Virtual Disk related

    Posted Sep 12, 2011 05:31 PM

    IMO the reason for this limit is the current structure of virtual disk files. The data (blocks of 512 Bytes) in these files is addressed using a UINT32 (32 bit unsigned integer) variable.

    UINT32 max. => FF FF FF FF => 4.294.967.295

    max. file size => 4.294.967.295 * 512 Bytes = 2.199.023.255.040 => 2 TB minus 512 Bytes

    see http://www.vmware.com/technical-resources/interfaces/vmdk.html

    André



  • 4.  RE: VM : Virtual Disk related

    Posted Sep 12, 2011 05:47 PM

    Wow you are good..

    Also explains why VM ware 5 hasn't overcome this limit (yet)...