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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 4Gb/s. Due to limited SAN switch ports only port 0 on each VMAX FA is connected - also at 4Gb/s.
The workload is expected to require at least 2300MB/s of reads at 128KB I/O size and 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 100MB/s per port and assume that the ports can sustain up to 300MB/s without exceeding 70% utilization.
What is the minimum number of FA ports needed to spread the workload evenly across all 4 VMAX engines and meet the above performance requirements?

A) 16 FA ports, 4 per director
B) 24 FA ports, 3 per director
C) 12 FA ports, 3 per engine
D) 16 FA ports, 4 per engine

2. During a Symmetrix VMAX performance analysis, you notice that a collection of VMAX devices has front-end I/O rates that are much higher than the back-end I/O rates. What might be the reason for this?

A) Devices are replicated with TimeFinder/Clone
B) Devices are RAID 5 protected.
C) Workload has a high percentage of read hits.
D) Workload has a high percentage of writes.

3. A customer needs to collect performance data from the HP-UX hosts in the environment. Which collection utility is used?

A) wrksdsts
B) perfmon
C) iostat
D) sar

4. Refer to the exhibit.

The workload shown is from a single application running on a VMAX. The workload is also from a single application on dedicated server. Which action(s) should the customer perform?

A) Review the devices and zone additional Front End ports on the same processors
B) Review the devices and use additional Front End processors on different processors
C) Spread the workload multiple devices on the back end
D) Installation of PowerPath is recommended

5. Refer to the exhibit.

In the SRDF/Star environment shown in the exhibit, what is the result of issuing the symstar halt command from the host at the workload site?

A) Allows all invalid tracks and cycles to drain, resulting in all three sites having identical data
B) Performs an emergency stop of all data replication
C) Resets both target sites during recovery from a workload site disaster
D) Disables consistency group protection for both remote sites

Solutions: