2V0-621 · Question #132
What is the minimum Virtual Hardware version required for vFlash Read Cache?
The correct answer is C. Version 10. vFlash Read Cache requires Virtual Hardware version 10, which was introduced with vSphere 5.5 - the same release that introduced the vFlash feature.
Question
What is the minimum Virtual Hardware version required for vFlash Read Cache?
Options
- AVersion 8
- BVersion 9
- CVersion 10
- DVersion 11
How the community answered
(44 responses)- A7% (3)
- B2% (1)
- C89% (39)
- D2% (1)
Why each option
vFlash Read Cache requires Virtual Hardware version 10, which was introduced with vSphere 5.5 - the same release that introduced the vFlash feature.
Virtual Hardware version 8 corresponds to vSphere 5.0, which predates the introduction of vFlash Read Cache and lacks the necessary VMX configuration parameters to support it.
Virtual Hardware version 9 was released with vSphere 5.1 and still predates vFlash Read Cache; the feature and its required hardware-level support were not available until version 10.
Virtual Hardware version 10 was introduced in vSphere 5.5, and vFlash Read Cache is a vSphere 5.5 feature that uses host-side SSD storage as a read cache tier for virtual machine disk I/O. Because the feature requires VMX-level support added in version 10, any VM must be at hardware version 10 or higher to configure a vFlash Read Cache reservation.
Virtual Hardware version 11 was introduced in vSphere 6.0 and does support vFlash Read Cache, but it is not the minimum required version - version 10 is sufficient and is the correct minimum.
Concept tested: Minimum virtual hardware version for vFlash Read Cache
Source: https://docs.vmware.com/en/VMware-vSphere/5.5/com.vmware.vsphere.storage.doc/GUID-4F1A4A73-2E97-4B7B-8BA1-B7A5F5B64C85.html
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