HP StorageWorks XP Remote Web Console Software - Manual (Page 143)

Figure 60 Suspend Pair Window
The Suspend Pair window displays the following:
• S-VOL Write: Allows you to specify whether hosts can issue read I/O and write I/O to the
secondary data volume after the mirror is split. The default is Disable.
If you select Enable, hosts can issue read I/O and write I/O to the secondary data volume after you
split the mirror.
If you select Disable, hosts cannot issue read I/O and write I/O to the secondary data volume
after you split the mirror.
This parameter takes effect only when the selected volume is a master journal group.
• Range: Allows you to specify the split range. This parameter is always set to Group and cannot
be changed.
• Suspend Mode: Allows you to specify how to handle update data that are not reflected to the
secondary data volume. The default is Flush.
• If
you select Flush, update data will be reflected to the secondary data volume when you
split the mirror.
When the secondary storage system receives a request for splitting a mirror, all the journal data
(i.e., update data) that the mirror retains will be written to the secondary data volume. After that,
the status of the mirror will change from Suspending to Suspend if the mirror does not retain
any journal data for a certain period of time.
• If you select Purge, update data will not be reflected to the secondary data volume when you
split the mirror. If you restore the mirror, the update data will be reflected to the secondary
data volume.
Restoring a Mirror (Resuming a copy operation)
A mirror is a combination of a master journal group and a restore journal group. If you split a mirror, the
copying of data from the master journal group to the restore journal group will be suspended. To restart
the copying of data, you need to restore the mirror. As for mirror in Hold status, you need to restore
the mirror in order to restart the copying of data.
To restore a mirror, follow the procedure below. Only the primary storage system administrator can
perform this operation; the secondary storage system administrator cannot perform this operation:
1. Ensure that the XP Remote Web Console main window is in Modify mode.
For detailed information about how to do this, please refer to XP Remote Web Console User’s Guide.
2. Ensure that the Journal Operation window is displayed (see
“ Journal Operation Window ” on page 123).
3. Do either of the following:
• In the tree, select a master journal group ( ) or a restore journal group ( ) from below
Registered.
• In the tree, select Journal Groups or Registered and then select a master journal group ( )
from the list to the right.
The list displays a list of mirrors. One row in the list represents one mirror.
4. Locate mirrors that are in Stop, Hold, or Hold(Failure) status.
Hitachi Universal Replicator for z/OS user guide for XP12000/XP10000 Disk Arrays and SVS 200 143