Modify Rec Multiplicity - Fujitsu ETERNUS DX60 S3 User Manual

Chapter 7 Advanced Copy Management
7.8 REC Management
2
Click the [OK] button.
 Formatting of an REC Disk Buffer starts.
3
Click the [Done] button to return to the [REC Disk Buffer] screen.
7.8.11

Modify REC Multiplicity

This function specifies multiplicity or priority level when performing REC.
It is not necessary to change the default setting (Automatic) 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 storage system and the remote storage system are connected by remote connection
• If "Automatic" 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
639).
• If "Manual" is selected for the specification mode, REC will be performed with the specified multiplicity.
When the local storage system and the remote storage system 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
• When the priority level is from "1" to "8", REC is performed using the specified priority level.
• Registering the Advanced Copy function license or the Storage Cluster function license is required to use
this function.
• If "***" is displayed in the "Recommended Multiplicity" field of the Remote Box ID List, and "Automatic"
has been selected for the specification mode, REC will not be performed with the appropriate multiplicity.
To select "Automatic", measure the round trip time using the procedure in
Time" (page
• If the path between local and remote storage systems has been changed, measure the round trip time
and set the multiplicity again.
For details on the parameters for this function, refer to
For the factory default settings for this function, refer to
"7.5 Modify EC/OPC Priority" (page
639).
ETERNUS Web GUI User's Guide (Settings)
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"7.8.5 Measure Round Trip Time" (page
600).
"A.7.9 Modify REC Multiplicity" (page
"Appendix B Modify REC Multiplicity" (page
656
End of procedure
"7.8.5 Measure Round Trip
964).
1012).
P2X0-1270-13ENZ0