There are a number of differences between the first phase/release of VAAI in vSphere 4.1 and the second phase
of VAAI, which was released with vSphere 5.0. The following is a list of those differences:
• VAAI in 5.0 now uses standard T10 primitives rather than per-array manufacturer commands.
• There is now full ATS support for all metadata operations with VMFS5.
• vSphere 5.0 introduced support for NAS primitives, including VCAI.
• vSphere 5.0 introduced support for Thin Provisioning primitives, including UNMAP.
• VMware HCL now requires performance of primitives before an array receives VAAI certification. This is
important because certain storage arrays that appear in the vSphere 4.1 HCL might not appear in the
vSphere 5.0 HCL if the performance of the offload primitives does not meet requirements. This post was last edited by KOL at 2018-11-29 09:46.
Differences in VAAI Between vSphere 4.x and 5.x
Created: Nov 29, 2018 09:33:22Latest reply: Nov 29, 2018 10:06:02
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