Backup

  • full backup
  • incremental backup - only back up changes since last incremental backup

  • differential backup - backup changes since last full backup

  • media

    • magnetic type 100 GB to multiple TB
      • easy to ship and store
    • disk
      • faster than magnetic type
      • can do deduplicate/compress
    • copy

  • NAS vs SAN

    • NAS (network attached storage)
      • file-level access -> will need to overwrite entire files
    • SAN (Storage Area Network)
      • block-level access -> cjust change portion of disk

  • maybe cloud

    • limited by bandwidth

  • can backup image

  • locations

    • offline -> to local devices
    • online -> remote connected third-party thru encrypted channels
      • also accessible, requires good bandwidth