Msi X2-109 v1 User Manual download pdf (Page 21)

RAID Overview 1-5

• A RAID 1 array consists of two physical drives.

• A RAID 5 array consists of three to eight drives.

• A RAID 10 array consists of four, six, or eight drives.

Note

: Some hardware configurations do not support eight disk

drives. So depending on the hardware, the actual maximum

number of drives for RAID 0, RAID 5 and RAID 10 arrays

can be fewer than eight.

Important:

LSI recommends that you not use both SAS and SATA

drives in the same array. Using different drive interfaces in

this way could cause decreased performance and

decreased Mean Time Between Failures (MTBF).

You can use either of these three strategies when creating RAID arrays

and logical drives:

• Maximize Fault Tolerance: You can maximize fault tolerance to

protect against loss of data by creating a RAID 1 array with mirroring.

All data is written to the primary disk in the array and is also written

(mirrored) to a second disk.

• Maximize Logical Drive Performance: You can maximize logical

drive performance by creating a RAID 0 array with striping. Data is

broken into segments and can be simultaneously written to or read

from several different stripes on several different disks in the array.

RAID 10 arrays combine both striping and mirroring to provide high

data transfer rates and data redundancy.

• Maximizing Storage Capacity: You can maximize storage capacity

when selecting a RAID level. Striping alone (RAID 0) requires less

storage space than mirrored data (RAID 1) or distributed parity

(RAID 5). RAID 5, which provides redundancy for one drive failure

without duplicating the contents of entire disk drives, requires less

space then RAID 1.

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Msi X2-109 v1 User Manual Page 21