A 2TB VMFS3 datastore has been upgraded to VMFS5. The original block size was 2MB.
What effect will this upgrade have on the maximum file size supported by the datastore?
The maximum virtual disk size remains 512GB
The maximum virtual disk size increases to 1TB
The maximum virtual disk size increases to 32TB providing the datastore is also increased
The maximum virtual disk size increases to 2TB minus 512B
If you have a .vmdk file in VMFS-3 format, with one of this size (depending on block size), then you have:
1MB file block size – max file size is 256GB2MB file block size – max file size is 512GB4MB file block size – max file size is 1TB8MB file block size – max file size is 2TB People think that because we maintain this original file block size in the upgraded VMFS-5, this still has relevance to the maximum size of the VMDK. But this is not true. If you update VMFS-3 to VMFS-5, independently the block size that this VMDK file have in VMFS- 3, now in VMFS-5 format this file can grown up to 2 TB minus 512 bytes, no more than this size. Reference: http://blogs.vmware.com/vsphere/2011/08/2tb-vmdks-on-upgraded-vmfs-3-to-vmfs-5- really.html