HP StorageWorks XP Remote Web Console Software - Manual (Page 129)

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High: The speed of the initial copy activity is faster than Low and Medium.
To specify High, ensure that update I/Os (that is, write requests from hosts to primary data
volumes) will not occur. If update I/Os occur, data volume pairs may become split (suspended).
: The secondary storage system administrator cannot specify this option.
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Unit of Path Watch Time: Allows you to specify the unit of path watch time. You can specify
one of the following: minute, hour, or day.
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Path Watch Time: Allows you to specify the interval from when a path gets blocked to when
a mirror gets split (suspended).
This value must be within the range of 1 to 59 minutes, 1 to 23 hours, or 1 to 30 days. You
can specify a numeric value in Path Watch Time.
CAUTION: If the DKCMAIN microcode 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, ask the Support Center to set
the mode 449 to OFF.
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.
NOTE: If you want a mirror to get split (suspended) immediately after a path gets blocked,
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
“System
Option Modes” (page 129) .
Table 27 System Option Modes
Description Mode
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.
448
ON: The SVP does not detect blocked paths.
OFF: The SVP detects blocked paths and monitors the time until the mirrors get split (suspended).
449
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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
Changing Options for a Journal Group 129