Summaries Of Rec Environment Settings Through Cli - Fujitsu ETERNUS DX80 S2 Cli User's Manual

Chapter 4 Function/System Settings and Display
4.2 Advanced Copy Management
4.2.5

Summaries of REC Environment Settings through CLI

Even though REC sessions may be started by using ACM and ETERNUS SF AdvancedCopy Manager upon
applying the REC environment settings using CLI, it is recommended that round trip times be measured to
optimize the performance between storage systems. The steps involved in setting the REC environment using
CLI are as follows:
Procedure
1
Switch the host interface ports to RA mode or CA/RA auto mode (on both the copy source
and the copy destination storage systems)
Use the "set host-port-mode" command to set the host interface port that is to be used to establish an
REC path to RA mode or CA/RA auto mode. The currently set mode can also be displayed by using the
"show host-port-mode" command. Parameter settings for each host interface port can be set by using
the "set fc-parameters" and "set iscsi parameters" commands.
2
Create TEXT type REC path information (TEXT type is recommended for CLI)
Describe the REC path information using a text editor, commercial software, etc. For details, refer to the
descriptions that follow.
3
Apply the REC path information
Use the "import rec-path" command to apply the REC path information to the target storage systems
(both the copy source and the copy destination). If a syntax error is detected, the command will
terminate with an error message and an error line. Make sure that the information in the REC path
information file matches the actual setup.
4
Measure and apply round trip times
Firstly, measure the round trip time using the "measure rec-round-trip-time" command in automatic
mode and apply it in the system. Individual round trip times can be manually measured and applied
afterwards if necessary. Multiplicity can also be set to fine tune the REC performance. For detail, refer to
the set rec-multiplicity command.
5
Define REC buffers (Only for REC Asynchronous Consistency Mode)
If the mode is used, define an REC buffer using the "set rec-buffer" command. The configuration and
status of the REC buffer can be checked by using the "show rec-buffer" command.
The following functions (services) are also supported:
• Exporting the REC path information system backup file to an FTP server.
• Converting the REC path information file type bi-directionally, from TEXT type to BINARY type, or from
BINARY type to TEXT type.
4.2.5.1 Path Information File
In order to control the REC, a path information file must be created. This file contains Box IDs, information
identifying ETERNUS DX Disk storage systems and remote adapters, host interface port information for the
host interface adapters installed in the ETERNUS DX Disk storage system. This file is set to RA (Remote
Adapter) mode. In the ETERNUS DX Disk storage system, two different path information file formats are
supported; TEXT type and BINARY type.
409
ETERNUS CLI User's Guide
Copyright 2015 FUJITSU LIMITED
End of procedure
P2X0-1030-09ENZ0