E20-863 Exam

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Exam : EMC E20-863
Title : Networked Storage-NS Expert Exam Implemnetation Engineers


1. A customer would like to try and maximize cache utilization when using their sequential read application via their Celerra to their CLARiiON storage array. They have set a prefetch value of N=2. Their file systems are all configured on clar_r5_performance storage pools.
How much more data will be prefetched using this value instead of the default value?
A.32 KB
B.64 KB
C.480 KB
D.512 KB
Answer: C

2. After implementing several File Retention Capable File Systems (CWORM) on a Celerra, several employees have tried unsuccessfully to delete some of the files saved.
They then approached the system administrator to delete these files.
What is the first procedure that must be completed before the files can be deleted?
A.Map the file system.
B.Change the state to CLEAN.
C.Change the state to DELETE.
D.Change the state to EXPIRED.
Answer: D

3. NDMP2Disk has been implemented for a customer.
The customer wants to copy their backups to tape. What must they do?
A.Initiate a cloning process through the backup software.
B.Export the tape set from the VTLU and import it into the physical TLU.
C.Export the file system to the backup server and back up the file system to the tape.
D.Attach a tape drive to the Data Mover with the mounted file system, and run server_archive.
Answer: A

4. A customer recently deployed another antivirus server into their existing environment, increasing the number of external checking servers to three (3). They also added an additional primary Data Mover, increasing the number of active Data Movers to three (3). Some tuning on their Data Mover parameters was done and their performance is less than was expected with the additional server.
You investigate the CAVA parameters and find that the customer has adjusted the value for the cifs maxVCthreads parameter to 25 with all the others remaining at the default values.
What is the EMC recommended value for this parameter?
A.10
B.15
C.20
D.The value they used is correct.
Answer: C

5. Click the Exhibit button.
A customer is using Celerra Replicator. For maintenance purposes, the customer must fail over their production FS to the remote site. After a successful failover, the customer is unable to access their share on the remote site.
What is a possible reason that the customer is unable to access the share?
A.The local cache on the Windows client needs to be updated.
B.There are still outstanding delta sets in the secondary SavVol.
C.Production FS is mounted to a different mountpoint on the remote site.
D.The customer is using internal usermapper as a secondary service instead of as a primary service.
Answer: C

6. Click the Exhibit button.
Which stripe volume, v136 or laserct500stripe, would provide better general performance characteristics?
A.v136, because it resides on four different RAID groups and is SP balanced
B.v136, because the capacity of the stripe is much larger than laserct500stripe
C.laserct500stripe, because it resides within RAID group 9 (which is a RAID 5 8+1)
D.Both volumes would provide comparable performance since each contains four FC disk volumes
Answer: A

7. A customer uses quotas on existing Windows server and wants to implement tree quotas on their new Celerra. The data is strictly home directories with no .pst files.
Which tool would you use to migrate this file system from the Windows server to the Celerra?
A.After creating tree quotas use fscopy to migrate data
B.CDMS assigning tree quotas once data is migrated
C.After creating tree quotas use emcopy to migrate data
D.Celerra Replicator assigning tree quotas once data is replicated
Answer: C

8. You have configured a SHARE level security file system, and it has been running for six months. The customer wants to add the HOME directory feature to that file system.
You enable this service and it does not work. Why?
A.The .homedir file is not configured.
B.SHARE level security is not supported with HOME directories.
C.You cannot enable HOME directories on a production file system.
D.Customer does not have the HOME directory license key installed.
Answer: B

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