An administrator observes this health check warning:
Controller firmware is VMware certified
They proceed to update the latest firmware on the Storage Controller. After a successful firmware upgrade, the same health check alert continues to display.
Which statement is true?
A. Controller is not VMware certified and hence any firmware version displays a warning.
B. The recently installed firmware is yet to be certified and included in VMware Compatibility Guide.
C. The VMware vSAN Health Service needs to be restarted for changes to take effect.
D. The alert can be ignored and silenced, since the firmware is newer than the recommended firmware.
An architect has been asked to plan the impact of a storage policy change to one of the production All-Flash based vSAN datastores. The change will reduce the failures to tolerate value from 2 to 1 for objects with a RAID-1 (Mirroring) layout in the existing policy. This change will be applied to multiple VMs.
Which statement is correct in this scenario?
A. FTT-2 requires another change to apply a RAID-6 configuration.
B. The policy will need to be recreated and applied with an additional tag.
C. There will be no objects rebuilt that impact performance.
D. There will be an object rebuild impact on performance.
Which two storage policy changes require a full rebuild of all components for an object? (Choose two.)
A. Increase the number of disk stripes for an object from 2 to 3.
B. Increase the IOPS limit for an object.
C. Reduce the Primary Failures to Tolerate from 2 to 1 for an object using a failure tolerance method of RAID-1 (Mirroring.)
D. Disable object checksum on an object.
E. Change the failure tolerance method of an object from RAID-1 (Mirroring) to RAID-5 (Erasure Coding).
Which two statements regarding networking are true for a vSAN Stretched Cluster? (Choose two.)
A. A 5ms RTT or less is required between the data sites.
B. The vSAN data network must communicate with the vSAN witness host.
C. PIM is required for stretched vSAN clusters.
D. A Stretched Cluster can use Layer 2 or Layer 3 communication for the vSAN network.
E. A Stretched Layer 2 network is required at the vSAN data sites and at the witness site.
Which two statements are true about enabling deduplication and compression on an All-Flash vSAN cluster with data? (Choose two.)
A. On-disk format version 3.0 or later is required to support deduplication and compression.
B. This can be enabled through storage policies and does not require any data migration.
C. Deduplication and Compression cannot be enabled on an existing vSAN datastore with data.
D. Move one host at a time to maintenance mode and enable deduplication and compression.
E. This requires data evacuation and disk format upgrade of all the disk groups.
A 3-node All-Flash vSAN cluster has this configuration:
One disk group per host All disk groups have identical make and model disks of an 800GB NVMe SSD cache and 2x 4TB SAS SSDs each An administrator has been tasked with expanding storage capacity by adding one additional disk group with this configuration: 1.6TB SAS SSD cache and 1x 4TB SAS SSDs Assuming all the disks are compliant with the vSAN HCL, which is true?
A. The additional disk group would not be possible as vSAN would not allow it.
B. The additional disk group would work and be fully supported by VMware support.
C. The additional disk group will generate an `Advanced vSAN Configuration in sync' health check warning.
D. The additional disk group would make this cluster an unsupported configuration.
During planned maintenance of a four-node vSAN cluster, an outsourced IT contractor accidentally removed a 2.5" SSD cache disk from one of the vSAN nodes. The storage policy has been configured with FTT=1 RAID 1, and the disk management UI marked the disk group as absent.
Which remediation steps should the administrator select to ensure VMs become compliant with the storage policy as soon as possible?
A. replace the SSD cache disk > rescan > add disk back in disk group
B. enter host in maintenance > remove from disk group > shutdown host > replace disk > power on host
C. remove disk group > enter host in maintenance > fully evacuate all data > exit maintenance
D. vSAN Health Check > retest > object health > repair objects immediately
A failed storage controller has two vSAN disk groups attached. The components contained on the drives in those disk groups are marked Degraded. vSAN reports that some objects do not comply with their assigned storage policy. How is the compliance issue resolved?
A. Initiate a proactive rebalance to force component repairs.
B. Degraded components are repaired after CLOM Repair Delay Timer expires.
C. Rebuilding of the degraded components starts immediately.
D. Storage policies must be reapplied to all affected objects.
An administrator receives an alert for vCenter being unavailable. With vCenter running on vSAN, the administrator wants to know if any other VMs are impacted. What command can an administrator run to determine the overall health of the vSAN objects?
A. esxcli vsan storage list
B. esxcli vsan cmmds timemachine get
C. esxcli vsan cluster get
D. esxcli vsan health cluster list
An All-Flash vSAN cluster has 4 nodes with this disk group composition on each host:
1 × 800 GB SAS SSD
6 × 3.84 TB SATA SSD
An administrator observes that in an All-Flash cluster, the Write Buffer Free Percentage is consistently low. As a result, there is increased latency experienced by the workloads.
Which remediation steps will resolve this issue?
A. Add a second disk group with a new cache device and distribute the capacity disks equally.
B. Add a second cache device to the same disk group to increase the caching size.
C. Modify advanced vSAN configuration parameters to utilize the complete 800 GB for caching.
D. Replace the existing cache device with a larger cache device.
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