ATTO Technology SC 5700 Manuel D’Utilisation

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ATTO Technology Inc. FastStream SC Installation and Operation Manual

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

RAID Level 1+0 is used in applications requiring high 
performance and redundancy, combining the 
attributes of RAID Levels 1 and 0. 
The ATTO FastStream supports an even number of 4 
to 16 drives per RAID Level 1+0 group. 

RAID 4 writes data across multiple drives or devices 
(striping) with parity blocks written to a single drive in 
the RAID group. This increases reliability while using 
fewer drives than mirroring. 

RAID Level 4 is best suited for applications that 
perform mostly sequential access such as video 
applications.
You must have at least three drives to set up RAID 
Level 4.

RAID Level 5 increases reliability while using fewer 
drives than mirroring by using parity redundancy: 
parity is distributed across multiple drives. 

The ATTO FastStream supports 3 to 16 drives per 
RAID Level 5 group. 

Stripe 1

Stripe 2

Stripe 3

Data 6

Data 4

Data 2

Data 6

Data 4

Data 2

Data 5

Data 3

Data 1

Data 5

Data 3

Data 1

Disk 1

Disk 2

Disk 3

Disk 4

Stripe 2

Stripe 3

Stripe 1

Parity 7-9

Parity 4-6

Parity 1-3

Data 9

Data 6

Data 3

Data 8

Data 5

Data 2

Data 7

Data 4

Data 1

Disk 1

Disk 2

Disk 3

Disk 4

Data 12

Data 11

Data 10

Parity 10-12

Stripe 2

Stripe 3

Stripe 1

Data 8

Data 4

Parity 1-3

Data 7

Parity 4-6

Data 3

Parity 7-9

Data 6

Data 2

Data 9

Data 5

Data 1

Disk 1

Disk 2

Disk 3

Disk 4

Stripe 4