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EMC Symmetrix Solutions Expert Exam for Technology Architects Sample Questions:

1. A customer has an environment where one application has a very high, sequential, write-intensive workload. They would like to use Dynamic Cache Partitioning to isolate this workload from the other applications. How should DCP be configured to separate the write-intensive workload from the other applications?

A) Create a smaller dynamic partition for the write-intensive workload and lower the donation age.
B) Create a larger dynamic partition for the write-intensive workload and increase the
donation age.
C) Create a smaller static partition for the write-intensive workload.
D) Create a larger static partition for the write-intensive workload

2. A company has three data centers that they use to run Concurrent SRDF/Star. All links between the workload and synchronous target sites were temporarily unavailable. They are unsure about the sequence of actions during the transient fault recovery process. When do they need to run the symstar reset command?

A) After the connection between the workload and target sites is reinstated
B) After switching the workload to the asynchronous target
C) After setting the RDF mode to Adaptive Copy
D) After disabling RDF consistency group protection

3. A new EMC customer recently installed their first VMAX and a complete suite of EMC management tools. Their lead capacity planner attended training and has started monitoring the VMAX. You receive a call and this person describes the measurements observed. During the period of heaviest workload, reported throughput on certain Fibre Channel ports is nearing 150,000 KB/second but those ports display only about 10% utilization. What is the likely cause?

A) Sequential prefetch skews throughput %
B) I/O block size is very small
C) Striped metavolumes report invalid IOPS
D) I/O block size is very large

4. A customer reports their hosts are performing slowly after migration to a new VMAX array.
You review performance data from the VMAX and note the following:
-I/O sizes are 16 KB.
-The front-end director ports are operating at 1 GB auto-negotiate.
-Several front-end director ports are approaching 100% utilization.
-A few director ports show little or no utilization.
What do you advise the customer?

A) Rebalance the hosts across all available FA ports and consider upgrading the SAN switch ports to 2 GB or higher.
B) Reduce the number of hosts that are accessing the VMAX and consider implementing iSCSI connectivity.
C) Add more HBAs to each host accessing the VMAX and consider setting the host I/O size to 8 KB or less.
D) Rebalance the hosts across all available FA ports and consider setting the front-end director ports to 2 GB or higher.

5. When designing a VMware cluster, which VM storage adapter reduces CPU utilization and allows high I/O throughputs?

A) LSI Logic SAS
B) LSI Logic Parallel
C) Paravirtual SCSI
D) BusLogic Parallel

Solutions: