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VMware vSAN Specialist Sample Questions (Q30-Q35):
NEW QUESTION # 30
In a 2-node vSAN cluster, one node has recovered from failure with FTT=1 and RAID-1 storage policy.
Refer to the exhibit:
What is the total VMDK storage consumed?
- A. 133GB
- B. 100GB
- C. 150 GB
- D. 200GB
Answer: D
NEW QUESTION # 31
A vSAN administrator observes that the VMware Skyline Health: Disk Format Version reports a format version that is lower than the expected version.
What does this status mean?
- A. The vSAN administrator must enable encryption for the vSAN datastore.
- B. The vSAN administrator must perform an immediate upgrade of the on-disk format.
- C. Deduplication and compression must be disabled for the vSAN datastore.
- D. A vSAN on-disk format upgrade is recommended.
Answer: B
Explanation:
The vSAN administrator must perform an immediate upgrade of the on-disk format. This status indicates that the vSAN on-disk format version is lower than the expected version. This could be caused by an incompatible version of the vSAN software or may be due to a failed upgrade attempt. In order to address this issue, the vSAN administrator must perform an immediate upgrade of the on-disk format. Reference: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.virtualsan.doc/GUID-59CD08C1-8C18-4DA3-A2CB-C7B6C912D739.html
NEW QUESTION # 32
An administrator has a 4-node vSAN cluster, and all virtual machine storage policies are configured as RAID-1 FTT-1. The administrator puts Host-1 in maintenance mode using "Ensure Accessibility".
During this time, Host-2, which is holding the updated object replica, fails permanently. A few moments later, Host-1 exits maintenance mode.
What happens to the writes that were committed on Host-2 after Host-1 enters this mode?
- A. The latest writes from Host-2 are applied to the stale components of Host-1 once the host exits maintenance mode.
- B. The latest writes are retrieved from backups.
- C. Any writes to Host-2 that occurred after Host-1 entered maintenance mode are lost.
- D. The latest writes were also written on a third host and are applied to the stale components of Host-1 once the host exits maintenance mode.
Answer: A
Explanation:
This is because vSAN maintains a copy of the object on each host that is a member of the vSAN cluster. When a host enters maintenance mode, the object's replica is moved to another host in the cluster. If another host in the cluster fails during this time, it's possible that the updated replica of an object may be lost. However, vSAN will still use the stale replica of the object on the host that exited maintenance mode to service read requests, and will update the stale replica with the latest writes from the remaining host after the host exits maintenance mode.
It is important to note that this scenario assumes that the host failure is a permanent failure and that vSAN does not have any additional data protection methods enabled such as RAID-5, RAID-6, or Erasure Coding.
The correct answer is D. The latest writes from Host-2 are applied to the stale components of Host-1 once the host exits maintenance mode. This is because vSAN utilizes a "write-order fidelity" mechanism which ensures that any writes that were committed to the other hosts in the cluster before Host-1 entered maintenance mode are applied to the stale components of Host-1 as soon as the host exits maintenance mode. Reference: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.storage.doc/GUID-C1E7F9A5-7F5E-4E7E-A012-2F0F19A3F0A4.html
NEW QUESTION # 33
A vSAN administrator, who has a cluster that has both compute-only and vSAN ReadyNodes, recently received a request to deploy a new application with higher storage performance requirements than what are currently available.
What are two ways the administrator can reconfigure the vSAN cluster to obtain this additional performance? (Choose two.)
- A. Add cache and capacity devices to the compute-only hosts.
- B. Add additional hosts, with capacity devices only, and then stream the cache from the other hosts.
- C. Add additional compute-only hosts from the vSAN cluster.
- D. Add additional cache and capacity devices to the existing data nodes.
- E. Add to the existing disk groups two cache devices and the eight capacity devices.
Answer: A,E
NEW QUESTION # 34
A VMware vSAN administrator is configuring advanced monitoring with VMware vRealize Operations Manager and has the following requirement:
* Ability to receive analytical information from the hard drive to determine a possible future failure of the hard drive.
What should be enabled for data collection when configuring the vSAN Adapter Instance?
- A. DST (Disk Self-Test)
- B. SSP (Storage Service Provider)
- C. IOPS (Input/Output Operations Per Second)
- D. SMART (Self-Monitoring, Analysis and Reporting Technology)
Answer: D
Explanation:
Self-Monitoring, Analysis and Reporting Technology (SMART) is an industry-standard technology that allows hard drives to report on their own health, including the ability to predict possible future failures. When configuring the vSAN Adapter Instance in vRealize Operations Manager, the administrator should enable SMART data collection to be able to receive analytical information from the hard drives and monitor their health.
By enabling SMART data collection, the administrator can use the data to identify potential issues with hard drives, monitor their health status, and take appropriate actions to prevent data loss.
This is explained in VMware vSAN documentation in the section "Monitoring vSAN Disk Health with vRealize Operations Manager" Reference: https://docs.vmware.com/en/VMware-vSphere/7.0/vsphere-vsan-70-admin-guide/GUID-9A9B1E1A-7D56-4C0B-A8C2-2A7E27AED9B9.html
NEW QUESTION # 35
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