Fujitsu Eternus DX100 S3 User Manual page 455

Chapter 4 Copy Function Settings and Display
4.1 Advanced Copy Management > set rec-buffer
-forwarding-interval
-halt-wait-timer
-monitoring-time
Optional. This parameter specifies the interval at which data should be transferred. A long
interval will reduce the Host I/O overhead, but increase the amount of data susceptible to loss
in the event of disaster. This parameter must be specified for the initial setup. If omitted, this
parameter value is not changed.
1 1 second (Recommended value)
2 2 seconds
4 4 seconds
8 8 seconds
15 15 seconds
30 30 seconds
45 45 seconds
60 60 seconds
75 75 seconds
90 90 seconds
105 105 seconds
120 120 seconds
Optional. This parameter specifies the maximum no-response time for which host I/O
responses may be delayed in order to prioritize data transfers from the REC buffer when it is in
a high-load state. When this time is exceeded, communication with the host I/O reopens, but
the copy session is halted. This parameter must be specified for the initial setup. If omitted,
this parameter value cannot be changed.
0 Disabled
5 5 seconds
10 10 seconds
15 15 seconds (Recommended value)
Optional. This parameter specifies the monitoring time for high-load state REC buffers. The
possible range is from 0 to 15 seconds. Zero means the monitoring function is disabled. When
the REC buffer has large amounts of data to be stored and is in a high-load state, the time
required for I/O responses to the server is gradually incremented by the "-halt-wait-timer"
parameter value. Once the delay state has continued for longer than this parameter value, all
REC Asynchronous Consistency Mode sessions that are currently transferring data are halted to
allow priority processing of the server responses. This parameter must be specified for the
initial setup. If omitted, this parameter value is not changed.
0 Disabled
1 – 15 1 to 15 minutes (5 minutes is recommended).
ETERNUS CLI User's Guide
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