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EMC E20-816 Exam Syllabus Topics:

EMC Symmetrix Solutions Expert Exam for Technology Architects Sample Questions:

1. A customer has a VMAX 1 Engine with 128 GB of cache. The disks are configured in RAID 1 and SRDF is not implemented. The applications on the VMAX perform heavy writes with a ratio of 20/80 (Reads/Writes). Due to continuous rate of writes, the VMAX reaches the Device Write Pending Limit.
What is the most cost effective way to address the problem?

A) Migrate from RAID 1 to RAID 6
B) Migrate from RAID 1 to RAID 5
C) Add cache on the VMAX
D) Spread write activity to more devices

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

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

3. You are planning a VMAX configuration with FAST VP for a customer's Exchange 2010
environment. The customer requests the database be placed on thin devices and the log files be placed on regular devices. Some of volumes are quite large and will require metavolumes to meet the capacity requirements.
Which metavolume configuration should you use?

A) Small meta-member size, even number of members.
B) Large meta-member size, odd number of members.
C) Large meta-member size, even number of members.
D) Small meta-member size, odd number of members.

4. A company has a VMware vSphere ESXi 5.0 host. They have been noticing performance issues when they receive bursts of heavy I/O workloads after a relatively low period of CPU utilization. Which measure could be taken in the VM configuration to alleviate this issue?

A) Decrease priority of monitor.idleLoopSpinUS setting
B) Increase monitor.idleLoopSpinUS setting
C) Decrease monitor.idleLoopSpinUS setting
D) Turn on monitor.idleLoopSpinUS setting

5. A customer has the following storage configuration for a specific application:
-Symmetrix VMAX 4 engine with 128 GB cache per engine
-SRDF/A with two 1 Gbps links to remote site
-4.2 TB of logical volumes configured for SRDF/A replication
-SMC / SPA installed for storage management
The customer is periodically experiencing high response times for the application.
How can the customer use SPA to determine the potential cause of the high response times?

A) View Ports FE throughput in Kbps versus Devices Kbps read + Devices Kpbs written
B) View RDF-Group (group number) rewrites per sec
C) View Directors BE % busy versus Directors FE % busy
D) View SRDF/A device write pending count versus system write pending count

Solutions: