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Exam2pass > EMC > EMC Certifications > E20-598 > E20-598 Online Practice Questions and Answers

E20-598 Online Practice Questions and Answers

Questions 4

For each file that is backed up in an EMC Avamar system, how many total bytes are added to the file cache?

A. 20

B. 24

C. 40

D. 44

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Correct Answer: D

The most important thing to do on a client with so many files is to make sure that the file cache is sized appropriately. The file cache is responsible for the vast majority (>90%) of the performance of the vamar client. If there's a file cache miss,

the client has to go and thrash your disk for a while chunking up a file that may already be on the server.

So how to tune the file cache size?

The file cache starts at 22MB in size and doubles in size each time it grows. Each file on a client will use 44 bytes of space in the file cache (two SHA-1 hashes consuming 20 bytes each and 4 bytes of metadata). For 25 million files, the client

will generate just over 1GB of cache data.

http://jslabonte.blogspot.com/2013/08/avamar-and-large-dataset-with-multiples.html

Questions 5

What is used by EMC Avamar to provide system-wide fault tolerance?

A. RAID, RAIN, Checkpoints, and Replication

B. RAID, RAIN, Checkpoints, and HFS check

C. Asynchronous crunching, Parity, RAIN, and Checkpoints

D. HFS check, RAIN, RAID, and Replication

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Correct Answer: A

Questions 6

A company has 50 clients backing up to an EMC Avamar server. The storage administrator has decided to enable desktop/laptop (DTLT) support for several of the Microsoft Windows client machines. Where is this support enabled?

A. Avamar client software installation

B. Avamar Windows Client Options menu

C. Avamar Administrator Policy window

D. Windows File System plug-in

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Correct Answer: A

Questions 7

How many total concurrent backup jobs can be run on an EMC Avamar server?

A. 17 backup jobs per storage node

B. 17 backup jobs per storage node, plus 1 per Avamar server

C. 18 backup jobs per storage node

D. 18 backup jobs per storage node, minus 1 per Avamar server

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Correct Answer: D

Questions 8

A storage administrator is planning to back up virtual machines residing on an ESX 4.0 server using EMC Avamar and VMware vSphere. What is a characteristic of this type of backup?

A. Image proxy is located on a virtual machine B. Avamar Interoperability Module must be installed

C. All virtual machines must be powered on

D. All virtual machines must be running Microsoft Windows 2003

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Correct Answer: A

Questions 9

What is an advantage of performing VMware Image Level backups with EMC Avamar?

A. Backups can occur while virtual machines are powered on or off

B. Virtual machines are backed up like any other physical machine

C. Highest level of data deduplication is provided

D. Database plug-ins are supported for backups and restores

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Correct Answer: A

Questions 10

What happens when files fail to find a match in the file cache during a backup of an EMC Avamar client computer?

A. An "is present" call to the Avamar server

B. Fewer chunks are compressed

C. More files are processed for backup

D. Increased memory swapping

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Correct Answer: C

Questions 11

During EMC Avamar garbage collection, which backups are candidates for deletion?

A. Backups that failed HFS check

B. Backups that were replicated to Data Domain

C. Backups of clients that have been retired

D. Partial backups older than seven days

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Correct Answer: D

For initial backup of Avamar clients, it's best to start with a small number of clients to produce a dataset from which commonality will be generated. This will increase the backup speed of following clients. On a new Avamar system, consider enabling overtime because all the data is new and there won't be much maintenance to take place. Never enable overtime on an existing Avamar, rather configure the use of partial backups to be saved. Partial backups are saved for 7 days and are not deleted by the garbage collection process. When an unfinished job ends before completing and partial backups are enabled, the backup job will continue from the last known state and will complete faster. http://gregandthenetwork.blogspot.com/2013/12/avamar-configuration-design-best.html https://communities.vmware.com/message/2166196

Questions 12

By default, what percentage of file system storage space is reserved for operating systems and checkpoint overhead on an EMC Avamar server?

A. 10%

B. 20%

C. 35%

D. 50%

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Correct Answer: C

The OS View is the total file system in the Avamar, while the gsan View is the total allocated to stripes. Gsan view is 65% of the Avamar server and it is used mainly for user data - this is the licensed capacity. Above that, 20% of the system file space is used for checkpoint overhead and the remaining 15% is for the operating system. http://gregandthenetwork.blogspot.com/2013/11/managing-avamar-server-capacity.html

Questions 13

What is the maximum number and types of nodes for an EMC Avamar multi-node server?

A. 7 storage, 1 utility, and 1 spare

B. 15 storage, 1 utility, 1 accelerator, and 1 spare

C. 16 storage, 1 utility, and 1 spare

D. 18 storage, 1 utility, and 1 spare

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Correct Answer: C

Exam Code: E20-598
Exam Name: Backup Recovery - Avamar Specialist for Storage Administrators
Last Update: Jun 05, 2026
Questions: 237

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