RAID Levels Flashcards
1
Q
RAID 0
A
Disk striping
No mirroring/parity
Performance only/no redundancy
2 physical drive minimum
2
Q
RAID 1
A
Disk mirroring
Full redundancy at cost of available disk space
2 physical drive minimum
No parity data
3
Q
RAID 5
A
Disk striping with parity (no mirroring)
Parity information spread evenly across disks
1/n total disk space used for parity
3 to n physical disk minimum
4
Q
RAID 6
A
Disk striping with double distributed parity
Allows for failure of up to 2 drives
4 physical drive minium
5
Q
RAID 1+0
A
Disk mirroring with striping
Stripe of 2 mirrored arrays
4 physical drive minimum
6
Q
RAID 0+1
A
Disk striping with mirroring
Mirror of 2 striped arrays
4 physical drive minimum
