Which workload is an ideal candidate for FAST VP?
A. Skewed
B. Uniform
C. Static
D. Concurrent
A customer has implemented a Symmetrix VMAX storage array with FAST VP as a consolidation target for four older storage systems. The storage array is running the current target Enginuity 5875 code. Pool allocation warning levels are set for 65% for the Fibre Channel pool.
If all data migrated to the array is bound to the Fibre Channel pool, how should the configuration of the pool reserve capacity be set?
A. 1% EFD, 35% FC, 1% SATA
B. 10% EFD, 10% FC, 10% SATA
C. 35% EFD, 35% FC, 35% SATA
D. 90% EFD, 90% FC, 90% SATA
A customer is using Virtual Provisioning on a Symmetrix VMAX that is being shared for production and non-production workloads. What can be used to separate the different workloads?
A. Dynamic Cache Partitioning
B. Symmetrix Priority Controls
C. Write Pending Limit
D. FAST VP
What can be used to monitor free space in a thin pool on a Symmetrix VMAX?
A. Event daemon storevntd
B. EMC ControlCenter Host Agent
C. Replication Manager IRCCD daemon
D. Tier Advisor
What is a valid action when a Symmetrix VMAX thin pool is nearly full?
A. Add new data devices and rebalance
B. Limit the oversubscription ratio
C. Initiate a "pool full" warning for the pool
D. Examine the pool ingress and egress rates
A Symmetrix VMAX hosts four applications. Each application is assigned a named Dynamic Cache Partition. Two of the partitions are static and two are flexible. The write pending limit for each partition is set to 60%.
What will happen if an application running in a flexible partition reaches the write pending limit set for that partition?
A. Host write activity to that partition will be throttled
B. Cache will be borrowed from the other flexible partition
C. Cache will be borrowed from the default partition
D. Write pending limit of the partition will be raised to 80%
A Symmetrix VMAX has been configured with Dynamic Cache Partitioning. What criterion must be met for a cache slot to be eligible for donation?
A. The fall through time must be greater than the donation age.
B. The fall through time must be less than the donation age.
C. The cache slot must belong to a static partition.
D. There must be cache slots available in the default partition.
A customer plans to configure their new Symmetrix VMAX 20K. They want your advice on how to configure a storage pool. This new storage pool will handle large block, sequential write I/O.
What advice should be provided about RAID types as they relate to performance?
A. Use RAID 1 because RAID 5 will have an overhead penalty.
B. Use RAID 5 because it can be more efficient for sequential writes than RAID 1.
C. Use RAID 6 because both RAID 1 and RAID 5 have a higher overhead penalty.
D. RAID type does not matter since everything in the VMAX goes through cache.
A customer plans to configure their new Symmetrix VMAX 20K. They want your advice on how to configure a storage pool. This new storage pool will handle random write I/O
What should be your advice about RAID types as they relate to performance?
A. Use RAID 1 because RAID 5 and RAID 6 will have a higher write penalty.
B. Use RAID 5 because it can be more efficient for random writes than RAID 1.
C. Use RAID 6 because both RAID 1 and RAID 5 have a higher write penalty.
D. RAID type does not matter since everything in the VMAX goes through cache.
A customer has several internal organizational units with different requirements for their unique lines of business applications. Which approach provides the most predictable performance for each business unit on the array?
A. Segregate the BCV/Clones/Pools across the front end, back end, engines, and disk to optimize each workload on its allocation of system elements.
B. Evenly distribute the BCV/Clones/Pools across the front end, back end, engines, and disk to optimize use of all system resources.
C. Evenly distribute the BCV/Clones/Pools across the front end, back end, engines, and disk, but only if the workloads are highly concurrent so that all system resources can be optimized.
D. Segregate the BCV/Clones/Pools across the front end, back end, and engines, but only if the workloads demonstrate very low concurrence.
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