NEC Express5800/T120a-E N8100-1531F User Manual page 99

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RAID10
Data to be recorded is distributed to two HDDs in mirroring mode. Then, each mirrored data is
written onto HDD by striping. Owing to this feature, high disk access performance of RAID0 and,
in addition, high reliability of RAID1 can be achieved.
HDD 1
Stripe 1
Stripe 3
Stripe 5
RAID50
Data is distributed to HDDs by striping with distributed parity, and then written onto HDDs by
striping. Owing to this feature, high disk access performance of RAID0 and, in addition, high
reliability of RAID5 can be achieved.
HDD 1
Stripe 1
Stripe 6
Parity (9, 10)
HDD 2
Stripe 1
Stripe 3
Stripe 5
RAID1
HDD 2
HDD 3
Stripe 2
Parity (1, 2)
Parity (5, 6)
Stripe 5
Stripe 9
Stripe 10
RAID5
RAID Controller
HDD 3
Stripe 2
Stripe 4
Stripe 6
RAID0
RAID Controller
HDD 4
Stripe 3
Stripe 8
Parity (11, 12)
RAID0
Configuring Your Server 4-29
HDD 4
Stripe 2
Stripe 4
Stripe 6
RAID1
HDD 5
Stripe 4
Parity (7, 8)
Stripe 11
RAID5
HDD 6
Parity (3, 4)
Stripe 7
Stripe 12

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