Raid Level 1+0: Striping, Mirror Spans Two Drives; Raid Level 5: Striping, Parity Distributed Among Drives - ATTO Technology FastStream VT 5700 Installation And Operation Manual

RAID Level 1+0: striping, mirror spans two drives

RAID Level 1+0 increases data transfer rates while
ensuring security by writing the exact same data
simultaneously to two or more different drives.
Stripe 1
Stripe 2
Stripe 3

RAID Level 5: striping, parity distributed among drives

RAID Level 5 increases reliability while using fewer
drives than mirroring by using parity redundancy:
parity is distributed across multiple drives.
Stripe 1
Stripe 2
Stripe 3
Stripe 4
Parity 10-12
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ATTO Technology Inc. FastStream SC Installation and Operation Manual
Disk 1 Disk 2
Data 1 Data 1
Data 3 Data 3
Data 5 Data 5
Disk 1 Disk 2
Data 1 Data 2
Data 5 Data 6
Data 9 Parity 7-9
Data 10
RAID Level 1+0 is used in applications requiring high
performance and redundancy, combining the
attributes of RAID 1 and 0.
The ATTO FastStream supports an even number of 4
to 16 drives per RAID Level 1+0 group.
Disk 3
Data 2
Data 4
Data 6
The ATTO FastStream supports 3 to 16 drives per
RAID Level 5 group.
Disk 3
Data 3
Parity 4-6
Data 7
Data 11
Disk 4
Data 2
Data 4
Data 6
Disk 4
Parity 1-3
Data 4
Data 8
Data 12