●
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 73 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 via Load Control
123
FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems Design Guide (Basic)
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