3.2 Compare and contrast business continuity and disaster recovery concepts. Flashcards
Cold site
- No hardware - empty building
- No data - bring it with you
- No people - bus in your team
Warm site
- Somewhere between cold and hot
- Big room with rack space
- Hardware is ready and waiting
Hot site
- An exact replica
- Stocked with hardware
- Applications and software are constantly updated
- Flip a switch and everything moves
File backups
• The archive attribute
Full - Everything
All selected data
Incremental
New files and files modified since the last backup
A restoration requires the full back and all of the incremental backups
Differential
All files changed since the last full backup
A restoration requires the full back and the last differential backup
Recovery
Mean time to restore (MTTR )- Mean time to repair
Mean time between failures (MTBF) - Predict the time between failures
Recovery may have a predefined
Snapshots
Capture the current configuration and data
Preserve the complete state of a device, or just the configuration
• Rollback to known configuration - Don’t modify the data, but use a previous configuration
• Live boot media