Figure 5 Raid5+0 Concept - Fujitsu ETERNUS DX100 S4 Design Manual

2. Basic Functions
RAID Functions
●
RAID5+0 (Double Striping with Distributed Parity)
Multiple RAID5 volumes are RAID0 striped. For large capacity configurations, RAID5+0 provides
better performance, better reliability, and shorter rebuilding times than RAID5.

Figure 5 RAID5+0 Concept

A
A
E
P
I, J
M
Drive#0
Fujitsu Storage ETERNUS DX100 S4/DX200 S4, ETERNUS DX100 S3/DX200 S3 Hybrid Storage Systems Design Guide (Basic)
Data writing request
A
Striping (RAID0)
A B
A
B
Create Striping with
B
parity data distributed parity
B
P
A, B
P F
E, F
I J
N P
M, N
Drive#1 Drive#2
RAID5
Copyright 2023 Fujitsu Limited
B C D
C D
C
D
C
(RAID5)
C
G
P
K, L
O
Drive#3 Drive#4
RAID5
19
Create
D
parity data
D
P
C, D
H
P
G, H
L
K
P
P
O, P
Drive#5
Striping (RAID0)
Striping with
distributed parity (RAID5)
P3AM-7642-32ENZ0