Raid 6 Logical Drives; Raid 60 Logical Drives - Adaptec RAID 2130SLP User Manual

RAID 6 Logical Drives

A RAID 6 logical drive—also referred to as dual drive failure protection—is similar to a RAID 5
logical drive because it uses data striping and parity data to provide redundancy. However,
RAID 6 logical drives include two independent sets of parity data instead of one. Both sets of
parity data are striped separately across all disk drives in the logical drive.
RAID 6 logical drives provide extra protection for your data because they can recover from two
simultaneous disk drive failures. However, the extra parity calculation slows performance
(compared to RAID 5 logical drives).
RAID 6 logical drives must be built from four or more disk drives, to a maximum of sixteen.
Maximum stripe size depends on the number of disk drives in the logical drive.
Disk Drive 1
Disk Drive 2
Disk Drive 3
Disk Drive 4
Disk Drives in Logical Drive

RAID 60 Logical Drives

Similar to a RAID 50 logical drive (see
dual drive failure protection— is built from eight disk drives configured as two or more RAID 6
logical drives, and stripes stored data and two sets of parity data across all disk drives in both

RAID 6 logical drives.

Two sets of parity data provide enhanced data protection, and striping improves performance.
RAID 60 logical drives also provide high data transfer speeds.
Drive Segment Size
250 GB
(Smallest Disk Drive)
250 GB
Disk Drive 1
Disk Drive 2
400 GB
Disk Drive 3
Disk Drive 4
400 GB
page 143), a RAID 60 logical drive—also referred to as
Selecting the Best RAID Level
1 P1 ... P2
2 P2 ... 449
P1 3 ... P1
Unused Space = 150 GB
P2 4 ... 500
Unused Space = 150 GB
RAID 6
= 750 GB plus Parity (P1 & P2)
Logical Drive
144
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