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Exam : EMC E20-830
Title : Networked Storage--NAS Expert Exam for Technology Architects


1. You are designing the implementation of three new NS704G Celerras which will be used for CIFS only. All of the Celerras will be in the same Active Directory domain. Two Celerras will be used for production data and one Celerra will be used for development and testing. What is the EMC best practice for configuring Usermapper?
A. Configure each Celerra with its own Usermapper server on server_2
B. Enable Usermapper on server_2 of one Celerra and run a secondary User mapper on server_2 of the other two
C. Let the two production Celerras run Usermapper on server_2 in the default configuration and configure the development and testing Celerra with a secondary UserMapper service on server_2
D. Set up a default Usermapper server on server_2 of one production Celerra and a secondary Usermapper server server_2 of the other production Celerra, then set up another default Usermapper on the development and testing Celerra
Answer: B

2. An existing Celerra Customer utilizes its Data Movers with its UNIX NFS environment. It currently updates the password and group files nightly on the Data Movers. They would like to add a new group of Windows' users to the Data Movers. Which architecture should be proposed?
A. Use the Usermapper for the Windows' users
B. Use Usermapper with a VDM for the Windows' users
C. Use the NTMigrate tools to create files and merge them into existing password and group files
D. Use Usermapper for the Windows users and groups, dump the database and merge the files nightly
Answer: C

3. A customer has an NS704G/DMX with production file systems mounted on server_2. The standy Data Mover is server_3, and server_4 and 5 are unused. There are currently 96 mirrored hyper volumes presented with BCVs. Currently 50% of Celerra volumes are in use. Which solution would best minimize the impact of backups on production data servers.
A. Configure NDMP 3 way backup with tape drives connected to an unused Data Mover
B. Take a TimeFinder/FS snap, mount it to an unused Data Mover, and backup the snap
C. Take a SnapSure checkpoint, mount it to an unused Data Mover, and backup the checkpoint
D. Use fs_copy incrementals to create a separate copy of the file system, mount the file system to an unused Data Mover, and back up the copy
Answer: B

4. You are planning for replication between two NS502G Celerras. One is located in New York, one is in Los Angeles. What must be considered for replication to be successfully established?
A. Time on both Celerras must be synchronized
B. Both sites must point to the same DNS servers
C. Each Control Station must be in the same domain
D. The rdf passphrase on each Celerra cannot be the same
Answer: A

5. You have a customer who is purchasing a new EMC NAS solution with the following requirements:
No DFS (Distributed File System)
Three 10 TB file shares
Which NAS platform do you propose?
A. NS502
B. NS602
C. NS704G
D. CNS-14 with five 514 Data Movers
Answer: C

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