Fujitsu ETERNUS AF250 S2 - Figure 5 RAID5+0 Concept

● RAID5+0 (Double Striping with Distributed Parity)
Multiple RAID5 volumes are RAID0 striped. For large capacity configurations, RAID5+0 provides better perform-
ance, better reliability, and shorter rebuilding times than RAID5.
Figure 5 RAID5+0 Concept
Striping with
dis
tributed parity (RAID5)
Striping (RAID0)
A
E
B
I
F
P A, B
P M, N
C
G H
P C, D
P O, P
Drive#0 Drive#1 Drive#2 Drive#3 Drive#4 Drive#5
D
K
P K, L
Striping (RAID0)
Striping with
distributed parity
(RAID5)
J
L
M
N
O
P
P E, F
P I, J
P G, H
RAID5 RAID5
A B
Create parity data
D
Create parity data
C
Data writing request
A
B
C
D
A B C D
A B C D
1. Function
RAID Functions
19
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays
Design Guide (Basic)
Copyright 2019 FUJITSU LIMITED
P3AG-1822-09ENZ0