Symmetrix Solutions Design Exam for Technology Architects (E20-326) Free Practice Test

Question 1

When does the ACOFW behavior apply in a TimeFinder/Snap environment?

A. Writes to protected tracks on the virtual device

B. All writes to the source device

C. Writes to protected tracks on the source device

D. All writes to the virtual device

Correct Answer: C

Question 2

Which FAST VP control parameter defines the amount of time FAST VP should wait after a thin device is brought under FAST VP control before performing a data movement?

A. Pool Reserved Capacity

B. Workload Analysis Period

C. Initial Analysis Period

D. Fast VP Relocation Rate

Correct Answer: C

Question 3

Prior to starting an implementation, which tool should be used to automate the data collection on a Windows host?

A. EMCGrab

B. EMCReports

C. E-Lab Advisor

D. Change Tracker

Correct Answer: B

Question 4

What is the maximum number of wavelengths that can be multiplexed on a single optical
fiber over CWDM?

A. 8

B. 160

C. 16

D. 32

Correct Answer: C

Question 5

A customer has a pair of VMAX arrays configured to replicate thin devices at one site to thin devices at another site using SRDF/A. The customer wants to implement TimeFinder/Clone replication of the R2 device on the target array and asks you to confirm this is a supported configuration. What do you advise the customer?

A. It is supported only if the precopy option is used.

B. It is supported only if composite groups are used.

C. Yes, it is supported.

D. No, it is not supported.

Correct Answer: A

Question 6

You are designing an SRDF/S solution. The workload profile is:
Total I/Os per second = 30000
Write % = 20
Read block size = 4 KB
Write block size = 4 KB
Network bandwidth can be purchased in increments of single OC3 (155 Mb/s) links. Data compression is not in use. How many OC3 links would you recommend?

A. 4

B. 3

C. 1

D. 2

Correct Answer: D

Question 7

You are designing an SRDF/A solution with Symmetrix VMAX 40K arrays. TimeFinder/Snap will be used to replicate the remote devices.
What is a design consideration?

A. Device Write Pacing should be enabled

B. Group Write Pacing should be enabled

C. Transmit Idle should be enabled

D. Delta Set Extension should be implemented

Correct Answer: A

Question 8

What is the Write Load Adjustment Factor recommended by Performance Engineering when modeling an SRDF/A solution with BCSD?

A. 3

B. 1.5

C. None

D. 2

Correct Answer: B

Question 9

A company plans to deploy Symmetrix VMAX arrays in their VMware vSphere environment. The ESXi hosts will be connected to the VMAX arrays over a FC SAN.
Which VMAX FA port flag is optional?

A. Unique worldwide name (UWN)

B. SCSI Support

C. Common Serial Number (C)

D. SPC-2

Correct Answer: B

Question 10

You are assigned to design a storage solution for a customer's Oracle OLTP environment. The current configuration has performance issues. Users have complained about slow response.
What knowledge about a typical Oracle OLTP workload will help in the redesign of the storage environment so that it runs more optimally?

A. Database tables, indexes, and redo logs are all characterized by a large number of
sequential I/Os.

B. Database tables, indexes, and redo logs are all characterized by a large number of
random I/Os.

C. Redo logs are characterized by a large number of random I/Os.
Database tables and indexes are characterized by a large number of sequential I/Os.

D. Database tables and indexes are characterized by a large number of random I/Os.
Redo logs are characterized by a large number of sequential I/Os.

Correct Answer: D

Question 11

A TimeFinder/Snap of production data must be recreated in a two hour cycle throughout the day. Which change tracker report will provide the best data for modeling a solution for the twenty-four hour period?

A. Delta report reset every twenty four hours

B. SUM report over twenty four hours

C. Delta report reset every two hours

D. SUM report over two hours

Correct Answer: C

Question 12

A customer is interested in utilizing TimeFinder/Snap to generate a backup copy of an application every six hours. In order for you to calculate the SAVE Pool requirements you will need to run Change Tracker. To which value should you set the reset interval length for DeltaMark?

A. 86400

B. 10800

C. 32400

D. 21600

Correct Answer: D

Question 13

What is a valid action when a Symmetrix VMAX thin pool is nearly full?

A. Examine the pool ingress and egress rates

B. Initiate a "pool full" warning for the pool

C. Add new data devices and rebalance

D. Limit the oversubscription ratio

Correct Answer: C

Question 14

A Symmetrix VMAX has been configured with Dynamic Cache Partitioning. What criterion must be met for a cache slot to be eligible for donation?

A. The fall through time must be less than the donation age.

B. There must be cache slots available in the default partition.

C. The cache slot must belong to a static partition.

D. The fall through time must be greater than the donation age.

Correct Answer: D

Question 15

How is Open Replicator licensed?

A. Licenses are per host and are priced based on an agent license that is entered via command line.

B. Licenses are per-system and are priced by the raw capacity of the array. This is required for both the remote and control arrays.

C. Licenses are per-system and are priced by the raw capacity of the array. This is required for the control array only.

D. Licenses are per host and are priced based on the amount on the total amount of storage capacity that is mapped to an FA port.

Correct Answer: C

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EMC Symmetrix Solutions Design Exam for Technology Architects (E20-326) Free Practice Test