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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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4 Click the [OK] button.
→ The round trip time measurement result is updated in the ETERNUS DX Disk storage system.
5 Click the [Done] button to return to the [Copy Path] screen.
End of procedure
8.2.18 Modify REC Multiplicity
This function specifies multiplicity or priority level when performing Remote Equivalent Copy (REC).
It is not necessary to change the default setting (Auto) for normal use. This function can adjust the copy
performance to give priority to REC over work I/O or to reduce the affect on work I/O.
When the local device and the remote device are connected by remote connection
• If "Auto" is selected for the specification mode, REC is performed with the recommended multiplicity that is
calculated by the obtained round trip time.
If the round trip time is not measured, "***" is displayed in the "Recommended Multiplicity" field.
To display the recommended multiplicity, use the procedure in "8.2.17 Measure Round Trip Time" (page
349).
• If "Manual" is selected for the specification mode, REC will be performed with the specified multiplicity.
When the local device and the remote device are connected by remote connection
• When the priority level is "Automatic", REC is performed using the priority level that is specified using the
procedure in "8.2.6 Modify EC/OPC Priority" (page 298)
.
• When the priority level is from "1" to "8", REC is performed using the specified priority level.
• If "***" is displayed in the "Recommended Multiplicity" field of the Remote Box ID List, and "Auto" has
been selected for the specification mode, REC will not be performed with the appropriate multiplicity. To
select "Auto", measure the round trip time using the procedure in "8.2.6 Modify EC/OPC Priority" (page
298).
• If the path between local and remote devices has been changed, measure the round trip time and set the
multiplicity again.