What are two prerequisites for using the TRIM and UNMAP capability of vSAN? (Choose two.)
A.
Deduplication and compression are enabled.
B.
The vSAN cluster is an all-flash architecture.
C.
The VM quest operating system supports ATA TRIM or SCSI UNMAP capability
D.
TRIM and UNMAP is enabled.
E.
Change the Object Space Reservation to 100.
The Answer Is:
B, D
This question includes an explanation.
Explanation:
The two prerequisites for using the TRIM and UNMAP capability of vSAN are:
B. The vSAN cluster is an all-flash architecture. TRIM and UNMAP are only supported on all-flash vSAN clusters, as they can reclaim space from flash devices that use thin provisioning. TRIM and UNMAP are not supported on hybrid vSAN clusters, as they cannot reclaim space from magnetic disks that use thick provisioning1.
D. TRIM and UNMAP is enabled. TRIM and UNMAP are disabled by default in vSAN, as they might have a performance impact on some workloads. To enable TRIM and UNMAP on a vSAN cluster, the administrator must use the following RVC command: vsan.unmap_support –enable2. After enabling TRIM and UNMAP, the administrator must power off and then power on all VMs that use the vSAN datastore.
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