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EMC Symmetrix Solutions Expert Exam for Technology Architects Sample Questions:

1. A new data warehouse will be hosted on an existing 4-engine VMAX array. The database server has 4 HBAs connected at 8Gb/s. Due to limited SAN switch ports only port 0 on each VMAX FA is connected - also at 8Gb/s.
The workload is expected to require at least 1700MB/s of reads @ 128KB I/O size. It must maintain performance in case of any major component failure in the host, switch or array. Assume that the existing workload on the VMAX does not exceed 350MB/s per port. Also assume that the ports can sustain up to 500MB/s without exceeding 70% utilization.
What is the best practice HBA to FA mapping to ensure the required performance of the data warehouse?

A) HBA0 -> E1 FA ports HBA1 -> F1 FA ports HBA2 -> G1 FA ports HBA3 -> H1 FA ports
B) HBA0 -> Engine 3 FA ports HBA1 -> Engine 4 FA ports HBA2 -> Engine 5 FA ports HBA3 -> Engine 6 FA ports
C) HBA0 -> E0 FA ports HBA1 -> F0 FA ports HBA2 -> G0 FA ports HBA3 -> H0 FA ports
D) HBA0 -> FA 7e0, 8e0, 9e0, 10e0 HBA1-> FA 5e0, 6e0, 11e0, 12e0 HBA0 -> FA 7h0, 8h0, 9h0, 10h0 HBA1-> FA 5h0, 6h0, 11h0, 12h0

2. Which Symmetrix VMAX component is involved in measuring sampled average response time?

A) Front-end ports
B) Cache
C) Front-end directors
D) Back-end directors

3. Refer to the exhibit.

A customer is running a VMAX with the utilization as shown on the Front End Storage Processors. The customer is looking for the lowest cost solution.
Which action(s) should you take?

A) Review server work load and balance I/O
B) Update server zoning and add more front end ports
C) Update server zoning and separate server workloads
D) Install PowerPath on servers

4. Within a VMAX storage environment, what would be a benefit of implementing OFA (Oracle Flexible Architecture) supporting an Oracle database application environment?

A) Ensures recoverable instances on the target host
B) Ensures optimal performance across multiple Oracle instances
C) Enables multiple versions of Oracle to run simultaneously
D) Enables restartable instances after an SRDF split

5. 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) Host workload allocation
C) Multipath configuration
D) Physical Disk limitation

Solutions: