HP StorageWorks XP Remote Web Console Software - Manual (Page 140)

NOTE:
Ensure that the same interval is set to both the master and restore journal groups in the same mirror,
unless otherwise required. If the interval differs between the master and restore journal groups, these
journal groups will not be suspended simultaneously. For example, if the interval for the master
journal group is 5 minutes and the interval for the restore journal group is 60 minutes, the master
journal group will be suspended in 5 minutes after a path gets blocked, and the restore journal group
will be suspended in 60 minutes after a path gets blocked.
CAUTION:
If the DKCMAIN microprogram version is 50-05-03-00/00 or higher, the path watch time setting
does not take effect because the system option mode 449 is set to ON at the factory setting. To make
the path watch time setting take effect, please ask the Support Center to set the mode 449 to OFF.
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 29 on page 140.
Table 29 System Option Modes
Mode Description
448 ON: If the SVP detects a blocked path, the SVP assumes that an error occurred, and then
immediately splits (suspends) the mirror.
OFF: If the SVP detects a blocked path and the path does not recover within the specified period
of time, the SVP assumes that an error occurred, and then splits (suspends) the mirror.
NOTE:
The mode 448 setting takes effect only when mode 449 is set to OFF.
449 ON: The SVP does not detect blocked paths.
OFF: The SVP detects blocked paths and monitors the time until the mirrors get split (suspended).
• Forward Path Watch Time: Allows you to specify whether to forward the Path Watch Time value of
the master journal group 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 will have
the same Path Watch Time value.
• Yes: The Path Watch Time value will be forwarded to the restore journal group.
• No: The Path Watch Time value will not be forwarded to the restore journal group. No
is the default.
• Blank: The current setting of Forward Path Watch Time will remain unchanged.
Caution:
This option cannot be specified in the secondary site. Select Yes in the primary site of URz pair
for delta resync operation since you need to set path watch time in the secondary site to perform
delta resync operation.
• Use of Cache: Allows you to specify whether to store journal data in the restore journal group
into the cache.
• Use: Journal data will be stored into the cache.
140 Using Journal Groups