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coolsung
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Contributor

How to calculate PVSCSI overhead?

Hello,

I have created product environment for Oracle RAC 3nodes on VMware.
DBA is requesting many ASM disks more.
Now, 3 nodes have lot of 130 multi-write disks for ASM.

I am confused by the below KB for using 256 PVSCSI.
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Prerequisites and limitations when using 256 PVSCSI disks in a virtual machine (54468)
https://kb.vmware.com/s/article/54468
Prerequisites
CPU: 2 CPUs with 28 cores per socket or above
Memory: 64GiB capacity or above
Physical Storage(Local Storage or Networked Storage):
IOPS Bandwidth Latency
Read >120000 >470MB/s <1080 usec
Write >110000 >470MB/s <1198 usec
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Is the KB for only using 256 PVSCSI?

Is not using 255 PVSCSI required 2CPUs with 28 cores & 64GB? and no limit feature?
Is using 128 PVSCSI requested half spec(2CPUs 14 Cores & 32GB) of using 256 PVSCSI?

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