4470747
Description
Flashcards by michael.0lsn, updated more than 1 year ago
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Created by michael.0lsn
about 8 years ago
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| Question | Answer |
| 1. What are the four components of a disaster recovery plan? | 1 - Emergency Plan 2- Back Up Plan 3 - Recovery Plan 4 - Test Plan |
| 2. What three things are backups used for? | -Disaster Recovery -Archival -Compliance |
| What is RPO? | Recovery Point Objective (RPO): a. A point in time to which application data must be recovered in order to resume business transactions. |
| What is RTO? | Recovery Time Objective (RTO): b. Maximum allowable time to bring the application back online. |
| 4. What are Backup Catalogs ? | c. A metadata database maintained by the backup server. |
| What are Backup Metadata? | a. Information about the backup data: File names, time of backup, size, permissions, ownership, tracking information |
| What are Incremental backups? | Full backup made regularly but further apart than a full backup strategy. Frequent - files that have changed since the last FULL OR INCREMENTAL backup. -Takes less time to backup than full or differential but uses less storage space -Slower restore |
| What are Differential Backups? | -Full backup made regularly but further apart than a full backup strategy. -Frequent - only files that have changed since the last FULL backup -More files to be backed up, therefore it takes more time to backup and uses more storage space than incremental but less than frequent full backups. |
| What is a Synthetic backup? | A synthesized full backup. -Created from the most recent full backup and subsequent incremental and/or differential backups. |
| What is a Snapshot? | "Point in Time" images of live systems -Usually a base image + differences -Usually takes place on a schedule (say every 10 mins) -NetApp .snapshot |
| What are CDP and Replication? | CDP - Continuous Data Protection - Backup system continuously and track changes in data Replication - keep a second, synchronized copy of data on a separate system. |
| What is HSM? | Hierarchical Storage Management Use different types of storage media, (RAID, disk, tape) each representing a different level of cost and speed of retrieval when access is needed. |
| What is deduplication and what are its benefits? | Reduces size of stored data File level or Block Level Finds Repetitive Data and deletes them Uses pointer instead of copies. |
| What is the difference between a SAN and a LAN backup architecture? | SAN - Data is moved via a separate backup network or fiber channel SAN directly from disk to Tape. - Only main servers are connected to these fast and expensive networks. LAN Enterprise-wide network clients automatically move backup data via a network, to a tape drive connected to a backup server, automated tape libraries w/ multiple tape drives allow multiple backup streams to be received from multiple clients in parallel |
| What are the two types of cloud backup? | Cloud Backup - Client agents watch specific files for changes and auto backs them up. Cloud Synchronized - A folder or drive that looks local but on the remote system. |
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