Storage-Data management

  • snapshots - fastest, not really a “backup”
    • copies settings and metadata necessary to restore your data in case of a disruption.
    • The actual data files need to be stored separately to be retrievable
  • replications - fastest, reliable, but resource hungry
    • what?
      • quick and easy resumption of operations after an outage or corruption
      • replicate everything
    • types
      • Async - Every X time, duplicate in other system
      • Sync - On every change, duplicate in other system
      • multi-site - multiple geographical locations/machin
      • snapshot
        • like normal snapshots but are
          • portable
            • can use the same snapshot and bring it to another machine/system
      • log shipping - mostly used for SQL logging redundancy & recovery
  • full backup - slowest, most reliable, no resource hungry
    • types
      • full - complete copy, classic backup
      • differential - Backs up changes made since last full backup (regardless of any incremental backups that occurred in the meantime)
      • incremental - backs up changes made since last backup (full and incremental)