EMC DES-1121 Exam Questions Free Practice Test

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Questions # 1:

Which compression algorithm is used on a PowerMax?

Options:

Deflate

LZS

LZW

FastLZ

Expert Solution

Questions # 2:

A systems administrator wants to know how to convert SRDF ports back to FA ports on their PowerMax array What information should be provided'?

Options:

A Simplified SymmWin script must be run from the PowerMax MMCS

Change can only be completed using Solutions Enabler or an upgraded bin file

Make the change using Solutions Enabler or Unisphere for PowerMax

Array will require an upgraded bin file to complete the change

Expert Solution

Questions # 3:

From an application perspective what should be done prior to performing an SRDF Fallback operation?

Options:

Continue accessing the R2 devices

Start accessing the R1 devices before running the command

Stop accessing the R2 devices

Run the command and then start accessing the R1 devices

Stop accessing the R2 devices

Start accessing the R1 devices before running the command

Continue accessing the R2 devices

Run the command and then start accessing the R1 devices

Expert Solution

Questions # 4:

You have just presented storage to an ESXi server and want to rescan the storage adapter to ensure the server can see the new volume Based on recommended best practices, what is the preferred method to perform this task?

Options:

Use the vSphere VSI plugin to rescan the entire cluster

Run the command from a non-cluster host using the ESX CLI

Use the vSphere Client to perform the rescan of the host

Run the command from the ESXi server with the ESX CLI enabled

Expert Solution

Questions # 5:

A host is connected to two PowerMax arrays with SRDF/Metro Host l/Os cannot be delivered across the SRDF link. The devices in the SRDF group have been forced into a Not Ready state to the host Which attribute is set on the SRDF group to cause this behavior?

Options:

Local Link Domino

Local Auto Link Recovery

Update After Resume Link

Limbo Period

Expert Solution

Questions # 6:

What is the correct sequence of steps to obtain PowerMax licenses and ensure the PowerMax is configured to allow the licensed features to work properly?

Question # 6

Expert Solution

Questions # 7:

An RDF group on a VMAX3 array is being replicated in SRDF/A mode to a remote VMAX3 array To accommodate application growth a new R1 device needs to be added to the RDF group SRDF/A consistency of the existing devices in the RDF group should be maintained when the new device is added.

What is the correct sequence of steps for adding the new R1 device and making it available for application use?

Question # 7

Expert Solution

Questions # 8:

What is the default size of a Gatekeeper on a PowerMax array?

Options:

3 cylinder

3 MB

6 cylinder

6 KB

Expert Solution

Questions # 9:

What is a recommendation when using Open Replicator to migrate data from a supported third-party array to a VMAX3 array?

Options:

Host I/O to the control devices on the VMAX3 array is allowed after the migration completes

Control devices on the VMAX3 array must be set to Not Ready for the duration of the migration

Host I/O to the remote devices on the third-party array can continue during the migration

Host I/O to the remote devices on the third-party array should be stopped for the duration of the migration

Expert Solution

Questions # 10:

What does a service level define*?

Options:

Expected average throughput for a Storage Group

Expected average response time target for a Storage Group

Expected average response time target for a disk group

Expected average throughput for a disk group

Expert Solution

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