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Category: E20-814

Exam E20-814: Symmetrix Solutions Expert Exam for Storage Administrators

What is the best way to provide predictable and controlled service levels for the production workloads?

Multiple production workloads on an EMC Symmetrix array experience performance issues during the backup window. Even though backups are written to SATA devices and production workloads reside on EFD and FC devices, response times for the production hosts degrade during the backup window and quickly recover thereafter.
During the backup window, the Symmetrix is consistently approaching the system write pending limit. What is the best way to provide predictable and controlled service levels for the production workloads?

Which two thin pool parameters should be used?

You work in the SAN engineering department for a company that has deployed their Microsoft Exchange 2010 application on EMC Symmetrix VMAX storage arrays across multiple site locations. The VMAX storage arrays utilize SRDF for disaster recovery. You are required to enforce thin pool utilization limits to avoid any performance implications that could arise from over-subscription.
Which two thin pool parameters should be used?

What could be the issue?

An EMC Symmetrix VMAX storage array is hosting multiple Microsoft Exchange 2010 servers in a virtualized infrastructure. Replication Manager is being used with TimeFinder/Clone to provide backups of the Microsoft Exchange 2010 environment with Microsoft Volume Shadow Service (VSS).
Each hypervisor has two HBAs which are zoned into separate fabrics with four FAs from the Symmetrix VMAX in each fabric. The hypervisors host four Exchange 2010 servers that contain 20 databases each. When presenting the RDMs to the hypervisors using Auto-Provisioning, some of the RDMs are not visible.
What could be the issue?

What is the minimum number of DRV devices that the administrator needs to configure?

A storage administrator is configuring Optimizer on an EMC Symmetrix VMAX array. The array is configured entirely with RAID 5 (3+1) devices. All devices are 8 GB and all devices are R1 devices with SRDF/A mirrors on a remote array.
Optimizer has completed the first cycle of performance analysis and has recommended a large number of device swaps to balance the activity on the array. The storage administrator has been asked to minimize the time it takes to complete all the swaps.
What is the minimum number of DRV devices that the administrator needs to configure?


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