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EMC E20-816 Exam Syllabus Topics:

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

2. 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) Drives
B) Back-End Adapters
C) Cache
D) Front-End Adapters

3. You are planning a migration for 20 VMware ESXi 5.0 servers from a DMX-4 to a new EMC VMAX array. Each server uses VMFS volumes and hosts more than 50 VMs. The customer reports their environment workload tends to be low outside of normal business hours but their service level agreement only permits one 4-hour offline window per quarter. Which tool do you recommend be used to migrate the ESXi servers to the VMAX?

A) Open Replicator
B) SRDF
C) Storage vMotion
D) Open Migrator

4. A company has a VMware vSphere 5.0 ESXi host using NUMA. This host is experiencing poor performance. Which BIOS settings on the ESXi host could help alleviate this performance issue?

A) Disable Node Interleaving
B) Disable HyperThreading
C) Enable Node Interleaving
D) Enable HyperThreading

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

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

Solutions: