Backup and Recovery Fundamentals

Published on July 2016 | Categories: Documents | Downloads: 70 | Comments: 0 | Views: 654
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Backup Overview 1. What statement about backup is correct? Backed-up data is usually retained for very long periods of time Backup is an additional copy of data made from an original source Tape is the only type of media used with backups The three primary purposes of backup are disaster recovery, archival and data replication 2. What is the purpose of an operational backup? To allow restoring a computer to operational state following a disaster To allow restoring a small number of files after they have been accidentally deleted or corrupted To copy or transfer data from a storage system to another storage system To save files and records for permanent or long-term preservation 3. What is an incremental backup? A backup off all data on the target volumes A backup that contains only changes since the last full backup A backup that contains only changes since the most recent backup A backup that contains only changes since the most recent backup of a lower level 4. Suppose you have defined a backup policy to run daily and take full backups every Monday and cumulative backups on the remaining weekdays. In case of a disaster on a Friday, how many backup sets will be required to perform a full recovery? 1 2 3 4 5. What is Recovery Point Objective (RPO)? A point in time to which application data must be recovered in order to resume business transactions The length of time that a particular backup set is retained on tape before it is overwritten by a new backup set The length of time that the backup software prevents the overwriting of a tape The maximum allowable time to bring the application back online Backup Overview 6. An automated tape library is an example of which storage method? Near-line storage Off-site vault

Offline storage Online storage

Backup Architecture 7. What applies to a backup server exclusively? It controls the robotic arm in a tape library It gathers data for backup It owns the backup catalog It writes the backup image to the backup device 8. What is a feature of direct-attached backups? Backup performance is reduced It has minimum impact on host and application performance It imposes distance restrictions Tape devices can be easily shared among backup hosts 9. What is a characteristic of SA backups? Does not require a LAN infrastructure Eliminates or reduces dedicated backup servers Increases the overhead associate with backups Reduces backup and restore performance 10. What is the benefit of LAN backups? Applications don’t need to be halted during LAN backup LAN backup does not have an impact on production systems Tape devices can be easily shared among backup hosts The backup server is the central point for all backups Backup Terminology and Considerations 11. Which statement about Backup Staging is correct? Staging helps to reduce the backup window Staging is normally used with off-site vaulting policies Staging is the process of copying data from a storage media to another The performance of a backup is not affected by staging 12. Which statement describes NDMP? It isn’t possible to restore single files when using NDMP, as all backups are performed at the logical block level

NDMP backup is completely LAN free NDMP backup can occur locally, from the file server directly to the tape drive NDMP backup requires a special agent to be installed on the file server

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