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E20-807 Questions and Answers

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E20-807 Questions and Answers

Question # 6

Refer to the Exhibit.

Cascaded SRDF has been deployed on VMAX3 has been deployed on VMAX3 arrays. The SRDF mode has been set to Asynchronous between Sites A and B.

Which SRDF mode is permitted between Sites B and C?

A.

Adaptive Copy Write Pending

B.

Synchronous

C.

Adaptive Copy Disk

D.

Asynchronous

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Question # 7

While analyzing performance of a VMAX3 array, the following details are observed?

  • High host response time
  • Low FE response time
  • High host CPU utilization

What should be investigated further?

A.

SAN connectivity

B.

Disk delays

C.

I/O queuing on the host

D.

I/O queuing on the frontend

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Question # 8

On a VMAX3 array, when will the backend director give equal priority to read miss and destage operations?

A.

At 5% of the System Write Pending Limit

B.

At 50% of the System Write Pending Limit

C.

At 75% of the configured cache in the array

D.

At 75% of the SRDF/A cache usage

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Question # 9

SRDF/Metro has been deployed between two data centers. SRDF/Metro is operating normally. Maintenance tasks at the R1 data center require the array to be offline.

Which SRDF operation should be executed on the Metro RDF pairs to facilitate the planned outage without affecting application I/O?

A.

Failover

B.

Split with bias set to R2

C.

Suspend with bias set to R2

D.

Swap

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Question # 10

What is a characteristic of sequential read I/Os on a VMAX3 array?

A.

Prefetch task will stop when sequential I/O stops

B.

Higher priority than the host I/O

C.

DA will start the prefetch task

D.

tracks are red into cache by the frontend director

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Question # 11

How can TDEVs be moved between the SRPs when using FAST.X?

A.

By associating the TDEVs with a different SLO

B.

By changing the Virtual Pool for the TDEVs

C.

By changing the SRP associated with the storage group

D.

By using Virtual LUN Migration

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