Hi everyone,

I'm trying hard to figure out the different pros and cons of using iSCSI vs NAS/NFS for ESX .vmdk storage.

NFS is of course filebased ......

What is iSCSI .... normally you would say block based, but open-e recommend setting tuning options for vm volumes to FILE I/O mode instead of BLOCK I/O ?

The performance gap between NFS and iSCSI i huge. Measured with IOMeter on the same physical storage target from a VMserver running on ESX the result for sequential READs at 1MB chunks is 80MB/s on iSCSI and 10MB/s on NFS volumes .....

Has anyone experienced problems with NFS as storage for ESX?


/Frank