System option modes – HP XP Continuous Access Software User Manual
Page 135
CAUTION:
If you want to downgrade the DKCMAIN microprogram version to lower than 50-09-00-00/00, you
must set the Path Watch Time within the range of 1 to 59 minutes before downgrading DKCMAIN,
or set it within the range of 1 to 60 minutes after downgrading DKCMAIN. If the Path Watch Time
is outside the range of 1 to 59 minutes before you downgrade DKCMAIN, the Path Watch Time
might not be displayed after DKCMAIN is downgraded. Use the JNL Group Detail panel to check
the Path Watch Time.
NOTE:
If the DKCMAIN microprogram version lower than 50-09-00-00/00 is used and the Path Watch
Time is set to 60 minutes, the Path Watch Time will be displayed as 60 minutes even if you upgrade
DKCMAIN to version 50-09-00-00/00 or higher.
NOTE:
If you want a mirror to get split (suspended) immediately after a path gets blocked, please ask the
Support Center to set the system option mode 448 to ON and set the system option mode 449 to
OFF. For detailed information about the modes 448 and 449, see
.
Table 30 System option modes
Mode
Description
448
ON: If SVP detects a blocked path, SVP assumes an error occurred, and immediately
splits (suspends) the mirror.
OFF: If SVP detects a blocked path and the path does not recover within the specified time
period, SVP assumes an error occurred, and splits (suspends) the mirror.
NOTE:
The mode 448 setting takes effect only when mode 449 is set to OFF.
449
ON: SVP does not detect blocked paths.
OFF: SVP detects blocked paths and monitors the time until the mirrors are split (suspended).
NOTE:
Mode 449 is OFF by default for DKCMAIN versions earlier than 50-05-03-00/00,
and is ON by default for DKCMAIN microprogram versions 50-05-03-00/00 or
later. If the DKCMAIN microprogram of your array is upgraded from earlier than
50-05-03-00/00 to 50-05-03-00/00 or later, the default value of mode 449
remains OFF.
•
Forward Path Watch Time: Specifies if the master journal group's Path Watch Time value is
forwarded to the restore journal group. If the Path Watch Time value is forwarded from the
master journal group to the restore journal group, the two journal groups have the same Path
Watch Time value.
• Yes: Path Watch Time value is forwarded to the restore journal group.
• No: Path Watch Time value is not forwarded to the restore journal group. No is the default.
• Blank: The current setting of Forward Path Watch Time remains unchanged.
CAUTION:
This option cannot be specified at the secondary site.
Select Yes at the primary site of the Continuous Access XP Journal pair for delta resync operations
because you must set the Path Watch Time in the secondary site to perform delta resync operations.
•
Use of Cache: Specifies if journal data is stored in the restore journal group in cache.
Continuous Access XP Journal user guide
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