Figure 61 Cascade Copy (Using Three Copy Sessions); Figure 62 Cascade Copy (Using Four Copy Sessions) - Fujitsu ETERNUS AF250 Design Manual

1. Function
Backup (Advanced Copy)
A Cascade Copy that uses the three copy sessions can be performed with the following configuration.

Figure 61 Cascade Copy (Using Three Copy Sessions)

OPC/QuickOPC/EC
Copy source
: Copy session 1
: Copy session 2
: Copy session 3
A Cascade Copy that uses the four copy sessions can be performed with the following configuration.
However, two EC sessions in the copy destination ETERNUS device cannot be "Active" at the same time.

Figure 62 Cascade Copy (Using Four Copy Sessions)

ETERNUS DX/AF
A
EC
ETERNUS DX/AF
A
QuickOPC
: Copy session 1
: Copy session 2
: Copy session 3
: Copy session 4
REC
(Stack mode)
Copy destination Copy destination
and source and source
B
REC
(Stack mode)
B
REC
(Stack mode)
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays Design Guide (Basic)
Copyright 2019 FUJITSU LIMITED
OPC/QuickOPC/
SnapOPC/SnapOPC+/
EC
Copy destination
ETERNUS DX/AF
C
EC
ETERNUS DX/AF
C
EC
100
D E
EC
D E
EC
P3AG-1822-09ENZ0