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RAID 3 Striping with parity on the dedicated disk. RAID 3 needs at least three hard

drives.

RAID 5 Striping with interspersed parity over the member disks. RAID 3 needs at least

three hard drives.

RAID 6 2-dimensional parity protection over the member disks. RAID 6 needs at least

four hard drives.

RAID 0+1 Mirroring of the member RAID 0 volumes. RAID 0+1 needs at least four hard

drives.

RAID 10 Striping over the member RAID 1 volumes. RAID 10 needs at least four hard

drives.

RAID 30 Striping over the member RAID 3 volumes. RAID 30 needs at least six hard

drives.

RAID 50 Striping over the member RAID 5 volumes. RAID 50 needs at least six hard

drives.

RAID 60 Striping over the member RAID 6 volumes. RAID 60 needs at least eight hard

drives.

JBOD The abbreviation of “Just a Bunch Of Disks”. JBOD needs at least one hard drive.

1.4 Volume relationship diagram

PD 2 PD 3 DS PD 1

VD 1 VD 2

Snap

RAM

Global CV

Dedicated

LUN 1 LUN 2 LUN 3

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 63 64

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Sans Digital iSCSI STORAGE Manuel d'utilisateur Page 8