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Chapter 8 Advanced Copy Management
8.2 Functions in the Action Area for Advanced Copy
ETERNUS Web GUI User’s Guide
Copyright 2013 FUJITSU LIMITED P2X0-1090-10ENZ0
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2 Change the REC Buffer configurations, and click the [Set] button.
● REC Buffer Setting List
• Usage
Specify the usage of the REC Buffer.
When setting the REC Buffer for sending, select "Send". When setting the REC Buffer for receiving,
select "Receive". When the target REC Buffer is not used, select "Unused".
• Remote Box ID
Select the Box ID for the remote device.
If the copy path information is deleted, "???" is displayed. Select "Unused" for REC Buffer usage or
select a new remote Box ID.
If "Unused" is selected for the usage, a "-" (hyphen) is displayed.
• Size
Select the REC Buffer size.
If "Unused" is selected for the usage, a "-" (hyphen) is displayed.
- ETERNUS DX90 S2: 128MB, 256MB, 512MB
- ETERNUS DX410 S2/DX440 S2: 128MB, 256MB, 512MB, 1024MB, 2048MB
- ETERNUS DX8100 S2/DX8700 S2: 128MB, 256MB, 512MB, 1024MB, 2048MB
• Forwarding Interval
Select the data transfer intervals.
If "Unused" is selected for the usage, a "-" (hyphen) is displayed.
- 1 sec., 2 sec., 4 sec., 8 sec., 15 sec., 30 sec., 45 sec., 60 sec., 75 sec., 90 sec., 105 sec., 120 sec.
• Monitoring Time
Specify the monitoring time, before transition to the "Halt" status for a copy session when an REC
Buffer shortage occurs. If the REC Buffer is in a high-load state for the specified monitoring time,
the copy session is automatically changed to "Halt" state. When "0 min." is specified in this field, REC
Buffer shortage monitoring is not performed.
If "Unused" is selected for the usage, a "-" (hyphen) is displayed.
- 0 min., 1 min., 2 min., 3 min., 4 min., 5 min., 6 min., 7 min., 8 min., 9 min., 10 min., 11 min., 12
min., 13 min., 14 min., 15 min.
• HALT Wait Timer
Specify the maximum non-response time. During the non-response time, the host I/O response is
stopped to give priority to performing REC Buffer transfers in a high-load state. If the non-response
time exceeds the specified value, response to host I/O is restarted. However, the copy session is
changed to the "Halt" state. When "0 sec." is specified for this field, ETERNUS DX Disk storage system
gives priority to the host I/O, and the copy session is immediately changed to "Halt" state.
If "Unused" is selected for the usage, a "-" (hyphen) is displayed.
- 0 sec., 5 sec., 10 sec., 15 sec.
● Advanced Setting
"I/O Priority Mode" and "Immediate HALT Mode" can only be set when setting a copy operation or
host I/O tuning for each REC Buffer. It is not necessary to change the default setting ("Disable") for
normal use.
• I/O Priority Mode
Select either "Enable" or "Disable" for the "I/O Priority Mode" of the REC Buffer.
If "Unused" is selected for the usage, "-" (hyphen) is displayed.
"I/O Priority Mode" reduces the effect on host I/O when an initial copy for starting, restarting, or
recovering the copy function is performed.