BACKUPS

michael.0lsn
Flashcards by michael.0lsn, updated more than 1 year ago
michael.0lsn
Created by michael.0lsn over 5 years ago
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server management second set of review questions.

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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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