Measure Round Trip Time - Fujitsu ETERNUS DX60 S3 User Manual

Chapter 7 Advanced Copy Management
7.8 REC Management
4
Save the copy path information file.
The default file name is "RecPath_serial number for the ETERNUS DX_YYYY-MM-DD_hh-mm-ss.bin".
(YYYY-MM-DD_hh-mm-ss: the date and time when the download screen
5
Click the [Close] button to return to the [Copy Path] screen.
7.8.5

Measure Round Trip Time

This function measures the round trip time between the local and the remote storage systems.
"Round trip time" is the time taken to make a communication between two storage systems.
Only one remote storage system can be measured at a time.
• Registering the Advanced Copy function license or the Storage Cluster function license is required to use
this function.
• Round trip time can be measured only when the connection type is "Remote". Round trip time cannot be
measured when the connection type is "Direct".
• Round trip times must be set for copy source and copy destination storage systems. Measure the round
trip time after applying the copy path information to both the copy source and copy destination storage
systems, and then set the results (measured value).
• Round trip time must be measured from a static state without sending data through the line. For
example, if REC sessions exist between storage systems, set the REC session status to "
before measuring.
• Make sure that the physical line is correctly configured between storage systems before measuring. When
a line has an error, the round trip time cannot be measured correctly.
• If the path between storage systems is changed, measure the round trip time again.
• Round trip time measurement requires a maximum of 160 seconds.
For details on the parameters for this function, refer to
The procedure to measure the REC round trip time is as follows:
Procedure
1
Select the remote storage system that is connected by remote connection to measure the
round trip time, and click [Get Round Trip Time] in [Action].
639
ETERNUS Web GUI User's Guide (Settings)
Copyright 2015 FUJITSU LIMITED
(Step
"A.7.6 Measure Round Trip Time" (page
3) is displayed.)
End of procedure
Suspend"
958).
P2X0-1270-13ENZ0