A customer notices that when they delete all the VNX Snapshots, SP utilization seems to increase for a long time. This problem occurs at the end of every development cycle, when cleaning out unused data from development servers.
How could the VNX Administrator prevent the performance degradation, while still being able to clean up old snapshots?
A. Keep at least one snapshot of the thick LUN.
B. Unmount the Primary LUN before deleting the snapshots
C. Defragment the LUN after removing all the snapshots.
D. Rename the snapshots prior to deleting them.
A customer uses VNX Snapshot for quality assurance testing throughout many phases of development. The customer notices that when project development ends and they delete all the snapshots, SP utilization seems to increase for a long time.
What could they have done to prevent the performance degradation?
A. Keep at least one snapshot of the thick LUN.
B. Unmount the Primary LUN before deleting the snapshots.
C. Defragment the LUN after removing all the snapshots.
D. Rename the snapshots prior to deleting them.
What is the maximum number of backend I/Os generated for every write to the PFS involved in a SnapSure checkpoint?
A. 3
B. 4
C. 5
D. 6
You are planning fracture granularity for SnapView Clone operations. What is the transfer size used to track updates to a 1 TB Source LUN?
A. 64 kB
B. 128 kB
C. 256 kB
D. 512 kB
When using pool-based thick LUNs for the SnapSure SavVol, what should be done in an environment containing FAST Cache?
A. Use a dedicated pool for SavVols Disable FAST Cache
B. Use a dedicated pool for SavVols Enable FAST Cache
C. Use the same pool for SavVols as the PFS pool Enable FAST Cache
D. Use classic LUNs from traditional RAID Groups Enable FAST Cache
A customer placed their application data on a thin LUN created from an existing pool. The thin LUN is reaching capacity and cannot be expanded due to capacity constraints on the pool.
What is the best way for the customer to reclaim some of the capacity on the thin LUN?
A. Compress the thin LUN
B. Defragment the thin LUN
C. Migrate the data to a new LUN on a new pool
D. Migrate the data to a new LUN on the same pool
You are investigating a performance problem on a VNX. The customer is using the array for storage for
their VMware servers, which is connected through a dual port 10G iSCSI IO module. They have divided
the available disks into two separate Storage Pools.
They are seeing 40% CPU usage on SPA and 85% CPU usage on SPB. After investigating, you find that
all LUNs in the second Storage Pool are now owned by SPB.
How should this be explained?
A. Block Deduplication is enabled for all LUNs in the second Storage Pool.
B. SPA iSCSI NIC has malfunctioned and all LUNs have trespassed.
C. Failover mode has not been set correctly.
D. SPB had a CPU malfunction and needs to be replaced.
You are investigating a performance problem on a VNX. The customer is using the array for storage for their VMware servers, which is connected through FC. They have divided the available disks into two separate Storage Pools.
They are seeing 70% CPU usage on SPA and 18% CPU usage on SPB. After investigating, you find that all LUNs in the two Storage Pools are now owned by SPA.
How should this be explained?
A. Block Deduplication is turned on.
B. SPB has lost FC connectivity.
C. SPB had a failure and LUNs have been trespassed.
D. Symmetric Active-Active is enabled.
You are about to start file deduplication of a 650 GB CIFS file system that contains 6.5 million files. There are clients accessing the file system, resulting in a utilization of 25%.
How long will it take for the scan and ingest to finish?
A. 18 hours
B. 21 minutes
C. 2 hours
D. 36 hours
You are about to start file deduplication of a 1300 GB NFS file system that contains 7.5 million files. There is no client access to the file system during the initial scan.
How long will it take for the scan and ingest to finish?
A. 18 hours
B. 21 minutes
C. 2 hours
D. 36 hours
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