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

3. SAN Functions
Stable Operation
●
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
Normal operation
REC path setting
Effective line speed
400Mbit/s
ETERNUS DX
Copy Path Bandwidth Limit
QoS
200Mbit/s
RA
200Mbit/s
200Mbit/s
RA
200Mbit/s
1 path fails
REC path setting
Effective line speed
400Mbit/s
Failure
RA
RA
ETERNUS DX
140
Even if a specific path
fails, steady load can
be maintained
QoS
200Mbit/s
200Mbit/s
200Mbit/s
Design Guide