E20-380 - Storage Management Implementation
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An EMC Data Domain customer has configured replication of four directories created under the /data/col1/backup MTree with the following configuration: NFS Exports /data/col1/backup/Engineering /data/col1/backup/Oracle CIFS Shares /data/col1/backup/Operations /data/col1/backup/HR They want to achieve the following: 1. Move these directories to MTrees 2. Consolidate the directories, where possible, to minimize the number of MTrees 3. Create new replication contexts They do not plan to change the protocols used to access these locations. Which MTree setup will support this configuration change?
Consolidate directories (Engineering and Oracle) to one MTree Consolidate directories (Operations and HR) to one MTree
What are the states of the SAS LED connection status indicators at the back of an EMC Data Domain ES20?
White, flashing green, solid green, amber
Which characteristic accurately describes EMC Data Domain Encryption software?
Supports both 128-bit and 256-bit AES algorithms
When using link aggregation across Ethernet ports on an EMC Data Domain system, which OSI layers provide load balancing by use of the IP layer?
3 and 4
An EMC Data Domain customer wants to add a static route using the CLI. Which command is used?
Which protocols support connectivity to an EMC Data Domain system through an Ethernet interface?
CIFS, NFS, DD Boost
When using a terminal emulation program for the initial configuration of an EMC Data Domain system, what is an accurate Flow Control setting?
Which command is used to check the SAS HBA card status on an EMC Data Domain system?
disk port show summary
A customer is deploying an EMC Data Domain system as a target for backups in their EMC NetWorker environment and a repository for MS SQL dump files. The NetWorker Storage Node is running Microsoft Windows Server 2008. The storage node, MS SQL Server, and Data Domain system are all connected to a private backup network through 1 Gb/s Ethernet. Which storage protocol can be used for both functions?
How many units of rack space are required to accommodate an EMC Data Domain DD670 with two ES20 expansion shelves?
An EMC NetWorker customer is implementing a new EMC Data Domain system in their environment. Backup data will be transferred over a private IP network. The customer plans to use three different NetWorker pools with different retention periods. Which configuration is required?
Create one AFTD for each pool
What is a characteristic of EMC Data Domain pool replication?
Replicates the virtual tapes
A customer is using DD Boost on their EMC Data Domain system. They want to use more than one network interface to send data to the Data Domain system from their Symantec NetBackup Media Servers. Which DD Boost feature can be used to accomplish this task?
An administrator wants to decrease the time needed to back up data to a locally connected EMC Data Domain system. In addition, the administrator wants to reduce the amount of network traffic generated by the backup software. Which DD Boost capability will achieve this requirement?
Distributed Segment Processing
Which EMC Data Domain technology allows inline deduplication to occur fast and efficiently?
SISL scaling architecture
When logging into an EMC Data Domain system during an initial installation, which connection type must be used?
A customer is writing critical data to the pre-configured, default NFS share on an EMC Data Domain system for subsequent replication to a remote site. Which directory on the local Data Domain system should be reviewed to verify the data is successfully being written?
What is the default behavior for the "messages" log file in an EMC Data Domain system?
Every Sunday a new log file is opened and the previous log file is renamed
Why would you increase the MTU size on an EMC Data Domain system?
Maximize performance when using 10 Gb Ethernet
Where is data that is written to an EMC Data Domain Archiver system initially stored?
What is the default behavior for messages log files in an EMC Data Domain system?
Every Sunday at 03:00 a new log file is opened and the previous log file is renamed
A customer is backing up data to an EMC Data Domain system with Extended Retention. To which tier(s) is the data written?
A customer is currently using an EMC Data Domain system with NFS configured over 10 Gb Ethernet. They have a requirement to archive to tape. Which process is used to transport data to tape?
Use the backup software to move backup data to tape
An organization currently writes backups to an EMC Data Domain system and then creates encrypted copies of their backups on tapes. These tapes are then shipped to a third-party offsite vault. They are now planning to deploy a second Data Domain system in a hosted disaster recovery site as a replication target. This will replace the use of the offsite tapes. The two sites are connected through an encrypted WAN link. Where should encryption be applied on the Data Domain systems to ensure a similar level of data security as their current process?
Use encryption of data in flight to the hosted disaster recovery site
A backup administrator is configuring a new EMC Data Domain system as a destination device for backups in their Symantec NetBackup environment. The administrator has configured NFS on the Data Domain system and set up the mount points on their Linux media server. The administrator tested the connection by mounting the Data Domain system backup directory and copying a file. Which additional step should be performed to maintain connectivity?
Modify the fstab file
In which path location are Autosupport logs stored on an EMC Data Domain system?
On an EMC Data Domain system, what is the role of file system cleaning?
Remove unreferenced segments from physical storage
An EMC NetWorker customer has recently implemented an EMC Data Domain system using DD Boost devices. A second Data Domain system was implemented at a remote site for replication purposes using clone-controlled replication. As part of the implementation, Client Direct was enabled for some of the backup clients. What is the result of enabling this setting on these clients?
Backup data is sent directly to the Data Domain system
After backups are expired and data is marked for deletion, when is space freed up on an EMC Data Domain file system?
When the Data Domain system is rebooted
When configuring backups to an EMC Data Domain system using VTL, what is a backup software recommendation?
When connecting EMC Data Domain expansion shelves, what should be done to avoid cable stress at the solder joints of the connector?
Use screw lock assemblies
As an administrator, you are configuring the data movement policy of an EMC Data Domain system enabled with Extended Retention. On which attribute is this policy based?
Last modified time of every file stored in the system and frequency of data movement
What is the maximum number of snapshots on an EMC Data Domain system?
You have deployed an EMC Data Domain system in a customer environment. Recently, the customer expressed concerns regarding data integrity issues. Which Data Domain system attributes protect against stored data corruption?
Checksum, self-healing file system, and RAID 6
What can an optional PCI-x Card slot be used for on an EMC Data Domain system?
1 GbE, 10 GbE, HBA VTL, SAS HBA only
What are two link aggregation methods supported on an EMC Data Domain system?
Balanced-xor and Round Robin
When using VTL on an EMC Data Domain system, why should persistent binding be enabled on the host?
Prevents interruption of backup operations after a system reboot
While implementing an EMC Data Domain system, the system is unable to join the Microsoft Active Directory domain. What is preventing the system from joining the domain?
System time varies from AD server time by 310 seconds
In an EMC Data Domain environment, which protocol is required for DD Boost?
An organization has 6000 GB of file system data with a daily change rate of 10%. Assume the first backup reduces by a factor of 3 (3x), daily incremental backups reduce by a factor of 10 (10x), and subsequent full backups reduce by a factor of 30 (30x). Required retention is 10 weeks (1 weekly full/6 daily incrementals) and system utilization cannot exceed 50% of available capacity. What is the minimum EMC Data Domain storage required?
A customer wants to integrate an EMC Data Domain system with IBM Tivoli Storage Manager (TSM) over NFS. Which device class is recommended to define the Data Domain system in TSM?
An EMC Data Domain customer has an environment with 10 branch offices whose backup data is replicated to their primary location. For disaster recovery purposes, the primary location is replicated to an offsite location. Which replication topology does this represent?
When creating virtual tapes on an EMC Data Domain system by specifying "L2" in the suffix of the virtual media barcode, which tape size will be created?
What changed in the WWN format of the EMC Data Domain OS 5.4?
NAA type 5
A customer has configured an MTree (/data/col1/departments) on an EMC Data Domain system with two subdirectories configured as Sales and HR. They want to configure replication to replicate only the Sales subdirectory to another Data Domain system. In addition, they do not want to replicate the HR subdirectory. How can this be accomplished?
Move the Sales subdirectory to its own MTree
When setting the MTU size for an Ethernet interface on an EMC Data Domain system, what is the maximum supported value?
An EMC Data Domain customer has setup a DD VTL for their backup software. They created slots, drives, and tapes. The backup software shows the tape drives and the robot, but not the tapes. Which step was missed on the Data Domain system?
Import the virtual tapes in the VTL
An EMC Data Domain customer has been achieving a compression ratio of 14:1 for database backups over the past year. Two weeks ago the aggregate compression dropped from 14:1 to 4:1. What is a possible cause for this change in compression?
User changed from single-threaded backups to multiplexed backups
You have been tasked with configuring an NFS export on an EMC Data Domain for use on a Symantec NetBackup media server. The NetBackup media server is running Linux O/S. All configuration tasks were completed on the Data Domain. You have created the NFS mount point, mounted the Data Domain NFS export, and created a directory for backups. After the first reboot, you notice that the Data Domain NFS exports are no longer mounted on the Linux media server. Which file needs to be modified on the Linux media server to allow Data Domain to be mounted after reboots?
Which EMC Data Domain feature requires a software license?
Virtual Tape Library