E20-895 - Backup Recovery - Avamar Expert Exam for Implementation Engineers
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An EMC Avamar customer notices that the Activity Monitor reports "Waiting client" for a particular client in a group backup. What is a possible cause for this issue?
The cid.bin file is missing on the client.
A customer has been performing full backups of their Microsoft Exchange 2003 server to an EMC Avamar server. A user needs to recover their mailbox. What must be done to recover this mailbox without changing all other mailbox data?
Recover to a Recovery Storage Group
An EMC Avamar backup administrator wants to use their company login account for administering an Avamar server using LDAP authentication. The directory service was added successfully using Avamar Administrator. However, they still cannot successfully log into Avamar Administrator with the account. What action is needed?
Associate LDAP user groups with Avamar domains
An EMC Avamar customer is having trouble backing up one of their file servers. They are able to ping the Avamar server from the client and vice versa. However, they are unable to browse the client directories. What should be done to fix this issue?
Deactivate the client, then activate it.
A customer is using deduplication nodes in their EMC NetWorker environment. They have configured a deduplication node to replicate to an alternate deduplication node and are cloning the metadata to a secondary device. After several successful backups, the customer wants to validate that they can recover data from the replication target. What can be done to ensure the data is recovered from the replication target?
Set RECOVER_FROM_REP_HOST environment variable on the NetWorker server
A customer has installed EMC NetWorker with Avamar as its device for deduplication disk storage. The administrator is setting up a NetWorker client for a Microsoft Windows 2008 SP2 server to backup to their Avamar system. Which process is responsible for the bulk of the deduplication processing on the client?
An EMC Avamar customer is setting up backups of their SharePoint farm with the Avamar SharePoint VSS plug-in. The customer has two web front-end servers, four application servers, and four database servers. Where does the front-end plug-in need to be installed?
On one of the front-end servers
A current EMC NetWorker customer is backing up a mix of Microsoft Windows and Linux servers in their environment. They decided to integrate two Avamar servers into their environment as deduplication nodes. Clients will be configured to back up to the first node with Avamar replication configured between the two. In the event that the primary deduplication node has failed and is unreachable, what will happen if a restore is initiated?
Recovery will be automatically performed from the replication target.
A current EMC Avamar customer is backing up the databases of their Microsoft Exchange 2007 environment on a nightly basis using the MS Exchange VSS plug-in. They now want to perform granular level recovery of individual messages. The Exchange VSS agent has been installed with the GLR option enabled and the host has been rebooted.What else needs to be done to allow granular level recoveries?
Install the Microsoft MAPI-CDO objects on the Exchange server and configure the Avamar backup user
An EMC customer has purchased a new Accelerator Node for their NDMP backups. During the configuration process, you receive an error that there is an authentication error. You discover that the 'ndmp user' is not created. Which command is used to create the user account?
server_user server_2 -add -md5 ndmp
A backup administrator needs to recover some deleted emails in an Exchange 2007 environment and decides to use the RSG method. When the recovery from Avamar is started it immediately fails. What could be the cause of the recovery failure?
The RSG information was missing.
An EMC Avamar customer is currently using a 2 TB Avamar Virtual Edition (AVE) for their backup environment. They want to begin backing up several Oracle databases and file servers running on a new ESX server. It is determined that a separate AVE should be added to the backup environment for these new backups. What should be done when implementing the new configuration?
Install the new AVE on a different ESX server from the first AVE
An existing EMC Avamar customer has a 7.8 TB single node server. They have started a restore of a large amount of data to a Microsoft Windows 2008 server. The restore rate is less than what they were expecting. What should be checked to ensure the restore is running as fast as possible?
Anti-virus software on-access scan is disabled
A customer has an EMC NetWorker deduplication node. The customer initiates a restore from a client but it fails to obtain the required hash IDs for the selected files. What is a potential reason for this behavior?
nsrmmd failed to start on the NetWorker storage node
A VMware environment is being set up for Avamar VADP image level backups. There are 20 Windows virtual machines and five image proxies are deployed. When the customer attempts to start an on-demand backup, it fails. What is a possible cause for the error?
No datastores have been selected for the VM Proxy Appliance.
A new EMC Avamar customer requires the ability to perform tapeout from Avamar to their existing third-party tape backup application. They want to know how the tape metadata is managed. Where is the tape metadata stored in this Avamar tapeout environment?
In the tape application being used
Refer to Scenario 4. What can be done to minimize the backup load on the clients with minimal resources?
Configure clients to backup with only a single stream
Refer to Scenario 4. What is the maximum number of recovery sessions that can run concurrently to a single client?
An EMC Avamar customer has a Microsoft SQL database that successfully completed a full backup. The next night, a differential is cancelled due to scheduling concerns. What should be considered for the next backup schedule?
Schedule a full backup at the next backup schedule.
A customer has been performing VMware image level backups of a Linux virtual machine (VM) to their Avamar server. They find that they are unable to restore a file from the image backup. What is a possible cause of this issue?
The Linux VM uses an Ext4 file system.
A customer has a EMC Avamar desktop/laptop environment consisting of 100 clients distributed across three Avamar domains. Compliance requirements mandate that 15 clients with 2 TBs of data on each must have their backups written to tape. Avamar Data Transport (ADT) with three 2 TB transport nodes will be used to accomplish the tapeout process. Which changes are required to accommodate this environment?
Configure each of the clients in their own dedicated domain
A new EMC Avamar customer requires the ability to perform tapeout from Avamar to their existing Symantec BackupExec tape backup application. They want to know how the tape metadata is managed. Where is the tape metadata stored in this Avamar tapeout environment?
In the tape application being used
A company recently deployed an MS SharePoint Farm that consists of three Web Front End (WFE) servers, three application servers and two database servers. Avamar backup software setup and configuration was completed according to EMC best practices. WFE server #1 was designated as "owner" of the backup. The company also decided that they need Granular Level Recovery functionality and installed Avamar GLR plug-in and Kroll Ontrack on WFE server #2. Federated backups of this farm were running successfully for the last 30 days. One day ago, the SharePoint administrator discovered corruption in the Central Administration content database and is asking to recover individual items using GLR functionality. How can the company accomplish this task?
Use a restore of the entire farm to restore the Central Administration content database.
A client is performing a file system backup to an Avamar 7.0 server. During the hashing process, it determines that a file hash is not located in any of the cache pages loaded in RAM, but is found in the champion list. What will happen as a result of this?
The page associated with the champion is brought into memory.
A database administrator wants to perform a restore from an online backup of their DB2 database that was taken the previous day via DB2 CLP. Upon looking at the backups from the previous day in Avamar Administrator, they notice multiple backup names are present. Which backup should they choose?
CLI-H-DB2 Database(s) backup
A customer with an existing EMC NetWorker environment has recently added an Avamar system to their environment. Avamar enhanced NDMP backup capabilities will be used to backup Celerra. In addition, the customer has a requirement to write the NDMP backup data from Avamar to tape on a weekly basis. Avamar Tapeout (ATO), installed on the Avamar utility node, will be used for this purpose. Which methods can be used to automatically schedule ATO batch jobs?
CRON tab on the utility node or with the NetWorker scheduler
An EMC Avamar customer has a SQL database that successfully completed a full backup. On the next night, a differential was cancelled due to scheduling concerns. What should be considered for the next backup schedule?
Schedule a full backup at the next backup schedule
A new VMware virtual machine has been created and will be protected with Avamar guest level backup. In addition, image level backups are not able to be performed in this environment. What can be done to provide quick, full system restores with an RPO of one day while keeping backup times low?
Create a VM template and perform daily backups of unique data.
An EMC Avamar customer is backing up a Microsoft Exchange 2007 Cluster. The Avamar Exchange VSS Client with Granular Level Restore (GLR) option selected was installed on both Exchange servers in the cluster. The customer needs to restore a single message. What can the customer select as a restore destination?
Current active node
An EMC Avamar customer has been backing up their SharePoint farm consisting of one web front-end, an application server, and a database server. They want to recover only one web application. What is a requirement to perform this restore?
A third-party SharePoint data recovery tool must be used.
An EMC customer wants to use LDAP authentication for their Avamar administrator user accounts. While testing the settings of the ldap.conf file with an ldapsearch string, a failure occurs with error "525: User Not Found" Which entry in the ldap.conf file is the root cause for this error?
You have been tasked with installing a 1 TB Avamar AVE server in an ESX environment for a new customer. The customer has thick provisioned the correct amount of LUNs with the correct sizing. The Performance Assurance Tool (PAT) has been loaded on the ESX environment and ran for 24 hours. The results come back and the test did not pass the requirements for an AVE installation. The customer says the test was not valid because there was a high load on their ESX environment at the same time the test was running. They want to run the test again. Should the tests be run again without any changes to the environment?
No. The PAT simulates I/O performance of an AVE server and caused the high load.
An EMC customer operating 24/7 has a single node 7.0 Avamar server at their remote site to back up their file servers. They recently implemented Data Domain to back up their large file servers and database servers. They do not have DNS, and an iperf test shows they have 800 Mbps available bandwidth off their 1 Gbps LAN connection during backup hours. Based on EMC best practices, what should you advise the customer?
Use the FQDN name of the Data Domain system.
A customer has an EMC Avamar integrated with a Data Domain system as a backup solution. They would like to use encryption for the backups that are directed to the Data Domain system. Which method(s) of encryption can be used in this environment?
Enable encryption-at-rest on the Data Domain system
An EMC customer is looking for options to back up their smaller remote sites with easy remote management, so they want to use Avamar Virtual Edition (AVE). Before installing ESX hardware at the remote sites they want to do a proof of concept using the existing ESX 4.1 server that they have at the data center. They provisioned 2 TB of virtual disks using VMAX thick provisioning with RAID 5 protection and zeroed out all blocks using eager zeroing. They tested the backup of three servers and do not see an improvement. According to best practices, what should the customer have done to avoid performance issues?
Use RAID 10 for the virtual devices.
A customer set up their EMC Celerra to back up through an Avamar NDMP accelerator node. They are not seeing any increased performance since the initial backup. They have investigated the Celerra and there are no outstanding issues. What is a potential reason for the poor backup performance?
Dataset options are set to Level-0.
A backup administrator needs to recover some deleted emails in an Exchange 2010 environment and decides to use the RDB method. When the recovery from Avamar is started it immediately fails. What could be the cause of the recovery failure?
The RDB information was missing.
An EMC customer has received a warning indicating that their Avamar server has crossed the 80% capacity threshold. Backups are completing within the backup window and there have been no recent increases in the client change rates. Maintenance processes are running successfully and garbage collection is freeing up space at its expected rate. What is the best course of action to take at this time?
Reassess retention policies
A storage administrator recently implemented image-level backups of their Windows 2012 Hyper-V cluster with CSV through Avamar. After one week, they review backup performance statistics and find that their image-level backups are not performing as optimally as expected. What should you recommend to address this issue?
Change ownership of all CSVs to the physical proxy node.
Refer to Scenario 7. For performance, what should the hash cache max be on the Microsoft Exchange servers?
Refer to Scenario 7. How should the backups be configured to minimize performance issues in the Microsoft Exchange environment?
Back up from the passive nodes
A customer with an existing EMC NetWorker environment has recently added an Avamar system to their environment. Avamar enhanced NDMP backup capabilities will be used to back up their VNX. In addition, the customer has a requirement to write the NDMP backup data from Avamar to tape on a weekly basis. Avamar Tapeout (ATO), installed on the Avamar utility node, will be used for this purpose. Which methods can be used to automatically schedule ATO batch jobs?
CRON on the utility node NetWorker Console
An EMC Avamar customer has three clients running Microsoft SQL that require the data be encrypted while transmitting over the network. The backup environment includes Avamar integrated with a Data Domain. The customer wants to maximize backup performance. Which option is available to backup the clients?
Avamar using in-flight encryption
An EMC Avamar customer has started backing up their Oracle 11g databases with 8 RMAN channels using RMAN scripts. They see that backups are timing out and unable to send CTL messages. What should you advise the customer do to fix the issue?
Minimize the number of RMAN channels.
A customer wants to back up their DB2 database on an Avamar 7.0 DB2 client. Currently they are using Avamar Administrator. They want to perform backups of individual table spaces. What can be used to meet this requirement?
Refer to Scenario 4. In the event that the primary deduplication node has failed and is unreachable, what will happen if a restore is initiated?
Recovery is automatically performed from the replication target
A database administrator is performing full backups of Oracle databases to an integrated EMC Avamar/Data Domain (DD) system. However, the backup administrator is concerned that the Data Domain back-end is running out of room. The administrator wants to start performing only incremental backups and store these backups on a second Data Domain system. What advice should be provided to the administrator?
Perform one full backup from each client to the second DD system before sending incrementals to it.
A customer has an EMC Avamar system with four storage nodes. The backup window is 10 hours and the maintenance schedule is set to the default lengths. The current backup ingest rate averages 1 GB/node/hr over the duration of the backup window. Additional clients are being added to the Avamar system. The client data and retention will increase the Avamar GSAN capacity to 50%. Which average data ingest rate would allow the Avamar system to remain at steady state with the new clients?
A customer has a large Oracle database being backed up to an EMC Avamar server. The backup runtime is exceeding their backup window. What is the recommended method to shorten the backup runtime?
Increase RMAN channel count, enable Oracle Block Change Tracking, and reconfigure Oracle to an incremental strategy
A customer has a Hyper-V 2012 cluster with SMB environment and wants to perform image level backups of their virtual machines (VMs). Where must the Hyper-V plug-in be installed?
All cluster nodes