Fujitsu ETERNUS DX S5 Series - Figure 71 Copy Path Bandwidth Limit

● REC Bandwidth Limit (Remote Copy QoS)
A bandwidth upper limit can be set for each copy path in the remote copy session.
Even if a specific path fails, the line bandwidth can be maintained without centralizing the load to other
paths.
The bandwidth limit can be specified in increments of Mbit/s.
Figure 71 Copy Path Bandwidth Limit
Normal operation
ETERNUS DX
Effective line speed
400Mbit/s
QoS
200Mbit/s
REC path setting
RA
200Mbit/s
RA
1 path fails
ETERNUS DX
Effective line speed
400Mbit/s
QoS
200Mbit/s
REC path setting
RA
200Mbit/s
RA
Failure
200Mbit/s
200Mbit/s 200Mbit/s
Even if a
specific path
fails, steady load can
be maintained
3. SAN Functions
Stable Operation
140 Design Guide