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D-PST-DY-23 · Question #1

SIMULATION A PowerStore user has a business need for file system snapshots of NAS Server NAS1 with the following attributes: - Taken M-F every 2 hours - Retention of 2 days The snapshots must be…

The correct answer is C. Reserve space E. Extended Statistics. Enabling Reserve Space (C) ensures dedicated storage is allocated for snapshots so they are never at risk of failing due to capacity constraints, and enabling Extended Statistics (E) is required for Windows clients to enumerate and access snapshots through the Previous Versions…

PowerStore Data Protection and Migration

Question

SIMULATION A PowerStore user has a business need for file system snapshots of NAS Server NAS1 with the following attributes: - Taken M-F every 2 hours - Retention of 2 days The snapshots must be accessible through the Previous Versions menu in Windows Using the PowerStore Simulator, make the appropriate configuration change. When you have finished, continue to the next question. Answer: 1. Launch the PowerStore Simulator and log in with the admin credentials. 2. On the left navigation pane, click Protection and then click Protection Policies. 3. Click Create Policy and enter a name and description for the policy, such as NAS1 Snapshot Policy. 4. Under Snapshot Rules, click Add Rule and configure the following settings: 5. Name: Enter a name for the rule, such as NAS1 Snapshot Rule. 6. Schedule: Select Custom and enter the following cron expression: 0 */2 * * 1-5. This expression means that the snapshots will be taken every 2 hours on Monday to Friday 7. Retention: Select Until and enter 2 days. This means that the snapshots will be deleted after 2 days. 8. Access Type: Select Snapshot. This means that the snapshots will be accessible through the Previous Versions menu in Windows 9. Click Save to create the snapshot rule and then click Next. 10. Under Replication Rules, click Skip. This means that no replication rule will be added to the policy. 11. Click Next and then click Finish to create the protection policy. 12. On the left navigation pane, click Storage and then click File Systems. 13. Select the file system that belongs to NAS Server NAS1 and click More Actions. 14. Click Edit and then click Protection Policy. 15. Select the protection policy that was created in the previous steps, such as NAS1 Snapshot Policy, and click Save. 16. Click Confirm to apply the protection policy to the file system.

Options

  • ASpace Reclaim
  • BQuota Exceeded Behavior
  • CReserve space
  • DAtomic Test and Set
  • EExtended Statistics

How the community answered

(39 responses)
  • A
    8% (3)
  • B
    26% (10)
  • C
    51% (20)
  • D
    15% (6)

Explanation

Enabling Reserve Space (C) ensures dedicated storage is allocated for snapshots so they are never at risk of failing due to capacity constraints, and enabling Extended Statistics (E) is required for Windows clients to enumerate and access snapshots through the Previous Versions interface - without both, the snapshot policy alone is insufficient for the full Windows integration to work. Space Reclaim (A) is a separate feature for recovering freed blocks (UNMAP/TRIM), which has nothing to do with snapshot scheduling or Windows visibility. Quota Exceeded Behavior (B) governs what happens when a user hits a storage quota limit - unrelated to snapshot configuration. Atomic Test and Set (D) is a SCSI locking primitive used in VMware/block storage environments, not a NAS file system snapshot concept.

Memory tip: Think "RE-sources for REcovery" - Reserve space and Extended statistics are the two file system properties you must enable so Windows clients can reach back in time via Previous Versions; the Protection Policy handles when snapshots happen, but these two settings handle how Windows sees them.

Topics

#file system snapshots#protection policy#NAS server#Windows Previous Versions

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