Fujitsu ETERNUS DX60 S3 User Manual page 961

Appendix A Parameter List
A.7 Advanced Copy Management
• Immediate HALT Mode
Description
Input condition/
Display contents
•
This mode should only be used by users who want to maintain host I/O performance as much as possible during
REC.
•
Items that are set for this mode are only applied when "0 sec." is selected for "HALT Wait Timer".
•
When "Enable" is selected, the ETERNUS DX changes the sessions using the target REC Buffers to "
the capacity of an REC Buffer is insufficient. If this occurs, the initial copy starts every time when recovering from
the "
this process taking an extended period of time.
• High Bandwidth Mode
Description
Input condition/
Display contents
If the controller firmware version is V10L4x or later, this mode is also enabled for the existing REC Buffers. To keep
the existing transfer speed specified with a controller firmware version V10L3x or earlier, select "Disable" for this
mode.
Select either "Enable" or "Disable" for the "Immediate HALT Mode" of the REC Buffer.
If "Unused" is selected for the usage, a "-" (hyphen) is displayed.
"Immediate HALT Mode" reduces the effect on host I/O because of the insufficient of REC
Buffer when "HALT Wait Timer" is set to "0 sec.". Enable this item when the response to
host I/O is reduced even if "0 sec." is selected for the "HALT Wait Timer".
•
Enable
•
Disable
•
"-" (hyphen)
Halt" status and the time required for the order of data transfers cannot be guaranteed, resulting in
Select either "Enable" or "Disable" for the "High Bandwidth Mode" of the REC Buffer.
If "Unused" is selected for the usage, "-" (hyphen) is displayed.
"High Bandwidth Mode" reduces the number of communications by transferring control
data required for buffer transfers with as little time as possible to improve the transfer
speed for long distance communication.
This item is displayed only when using the controller firmware version V10L4x or later.
•
Enable
•
Disable
•
"-" (hyphen)
ETERNUS Web GUI User's Guide (Settings)
Copyright 2015 FUJITSU LIMITED
961
Halt" if
P2X0-1270-13ENZ0