ASM and VMWARE

    I recently took on a project with a new client.

I’m tasked with building several databases in a RAC environment (19.23)

   ASM is being used with VMWARE on a EMC Unity Array. I recommended

creating a few disk groups with a minimum of 4 LUNS (same size) for each group.

   The unix admin is against doing that saying that just use 1 large disk for each group.

He says it’s a disadvantage when using a virtual disk infrastructure like we have with our EMC Unity disk farm.

He states it is actually a disadvantage to carve up such small physical disks at the SAN Storage Array processor

level and is not actually even possible as only whole disks can be assigned to a particular use at that level.

     Although, I have not worked much with VMWARE, I’ve never heard of these restrictions

when using ASM, so I have my doubts.

       Any thoughts or experiences on this would be greatly appreciated

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