1 / 6

Backup Recovery

Backup Recovery. INFM 718X / LBSC 708X Session 9. Backup Goals. Undoing a user error cd ../backup on terpconnect Recovery from storage failure RAID, periodic backups Business continuity Offsite storage, remote data centers Offline storage Files that may be needed in the future

step
Télécharger la présentation

Backup Recovery

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Backup Recovery INFM 718X / LBSC 708X Session 9

  2. Backup Goals • Undoing a user error • cd ../backup on terpconnect • Recovery from storage failure • RAID, periodic backups • Business continuity • Offsite storage, remote data centers • Offline storage • Files that may be needed in the future • Replication for long-term preservation • IA, LOCSS, SRB

  3. Typical Assumptions • MTBF is large • Particularly with RAID arrays • Moderate MTTR is therefore acceptable • Simple goals • Restore an operational system to a prior state • Single-file or full-system

  4. Backup Levels • Level 0 (Full) • All data • Level 1 (Incremental) • All data since the most recent Level 0 • Level 2 (Overnight) • All data since the most recent level 1

  5. Backup Media • Magnetic tape • Media reuse policy • Magnetic disk • Mirroring for large collections • Optical disk (e.g., DVD) • Mostly for personal use

  6. Examples at Maryland • Standard backup services • OIT, UMIACS, … • Database backups (grades, financial, …) • Often including transaction logs • Email servers • Personal • e.g., on DVD’s

More Related