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EMC Symmetrix Solutions Expert Exam for Technology Architects Sample Questions:

1. Two weeks after configuring FAST-VP on a new VMAX array with EFD, FC and SATA tiers you notice that FAST-VP is no longer moving data to the SATA tier which is 82% full. The active FAST-VP policy lists 100% for the SATA tier. What is preventing more data moving to the SATA tier?

A) Too many TDEVs are bound to the FC tier
B) Pool Reserve Capacity is set to 80%
C) Fast Relocation Rate is set to 5
D) Pool Reserve Capacity is set to 20%

2. Refer to the exhibit.

A customer requested that you conduct a performance evaluation test for migration of a DB2 database server to new Symmetrix VMAX storage. The test storage is configured as 20 logical volumes allocated on four FE ports to two HBAs in the server. Each volume is 50 GB and is configured as a 4 way striped meta. The results of the test indicate 20% less throughput than was expected.
The exhibit shows results from the data collected during the time frame of the test.
What is a likely cause for this performance issue?

A) FA processor limitation
B) Multipath configuration
C) Physical Disk limitation
D) Host workload allocation

3. An existing 2-engine VMAX array has 192 x 450GB 15K Fibre Channel drives in a single Virtual Provisioning pool. Two Linux database hosts are connected to the array and both are running PowerPath.
Host oradb01 is connected to the E0 FA ports on each director and is meeting the customer performance SLA. Host oradb02 is connected to the G0 FA ports on each director - and for the past 3 days this host has been experiencing poor performance during peak activity in the afternoons.
What steps do you take to identify likely bottlenecks?

A) Use SMC to check for Virtual Pool alerts, use SPA to measure drive response times
B) Open a case with EMC Support and upload Oracle Statspack information
C) Run iostat -x in order to compare I/O size and read/write ratio of the two hosts
D) Check the host for queued I/Os, use SPA to examine I/O size and utilization on the G0 FA ports

4. Refer to the exhibit.

A customer engaged technical support for a performance issue with their application. The exhibit shows IOPS for the four FA processors utilized to connect the HPUX host to the storage. The FA processors are dedicated to the application. All logical volumes, ports and storage are part of a single masking view. What should the customer change to enhance performance of the host?

A) Correct multipath configuration
B) Add FA processor capacity
C) Modify host LVM configuration
D) Add FA ports

5. You have been asked to start the analysis of an I/O response time issue in a four engine VMAX but do not yet have access to any detailed SPA or WLA data. Which component is most likely to be causing the response time delay?

A) Front-End Adapters
B) Cache
C) Back-End Adapters
D) Drives

Solutions: