What are two prerequisites for using the TRIM and UNMAP capability of vSAN? (Choose two.)
What are two prerequisites for using the TRIM and UNMAP capability of vSAN? (Choose two.)
To use the TRIM and UNMAP capability of vSAN, two prerequisites must be met: the VM guest operating system must support ATA TRIM or SCSI UNMAP capability, ensuring the OS can send the necessary commands for space reclamation, and TRIM and UNMAP must be enabled in the vSAN settings to activate this feature. These configurations allow vSAN to reclaim unused space effectively.
https://core.vmware.com/resource/vsan-space-efficiency-technologies#sec19560-sub6
TRIM/UNMAP Space Reclamation In an attempt to be more efficient with storage space, modern guest OS file systems have had the ability to reclaim no longer used space using what are known as TRIM/UNMAP commands for the respective ATA and SCSI protocols. vSAN has full awareness of TRIM/UNMAP commands sent from the guest OS and can reclaim the previously allocated storage as free space. This is an opportunistic space efficiency feature that can deliver much better storage capacity utilization in vSAN environments. VMware Specific Guidance In vSAN 8, TRIM/UNMAP can be enabled in the User Interface, under the services enablement https://core.vmware.com/resource/vsan-space-efficiency-technologies#sec19560-sub6
C D. https://core.vmware.com/resource/vsan-space-efficiency-technologies#:~:text=To%20enable%20TRIM%2FUNMAP%20for,connect%20to%20the%20RVC%20console.&text=Next%2C%20browse%20to%20compute%2C%20and%20identify%20the%20cluster%20name.&text=Next%2C%20enable%20unmap%20support.&text=Once%20enabled%2C%20there%20are%20several,reclaim%20no%20longer%20used%20capacity.
C, D is correct
C&D are correct - B is wrong because OSA also it support without all flash architecture. TRIM/UNMAP Configuration Enabled by default on vSAN ESA and disabled by default on vSAN OSA, vSAN Cluster > Configure > Services > Advanced Options
Correct Answer:- C&D