HP XP P9500 Storage User Manual

Page 84

For Path Watch Time, specify the interval from the time a path becomes blocked to when the
mirror is split (suspended). The interval must be the same for master and restore journals in
the same mirror (see next item).

Important: If you want a mirror to split immediately after a path becomes blocked, ask HP
Technical Support to set system option mode 448 to ON and set system option mode 449 to
OFF.

For Forward Path Watch Time, specify whether to forward the Path Watch Time value of the
master journal to the restore journal. If the Path Watch Time value is forwarded from the master
journal to the restore journal, the two journals will have the same Path Watch Time value.

- Yes: The Path Watch Time value will be forwarded to the restore journal.

- No: The Path Watch Time value will not be forwarded to the restore journal. 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. For a pair using the delta

resync configuration, select Yes in the primary site

For Copy Pace, specify the pace for initial copy activity per volume. This field cannot be
specified on the remote system. Low is the default. When specifying Medium, ensure that write
I/O is 10 MB/s or less per parity group. If it exceeds 10 MB/s, pairs may be suspended.
When specifying High, ensure that I/O will not occur. If update I/O occurs, pairs may be
suspended.

For Transfer Speed, specify the line speed (in Mbps (megabits per second)) of data transfer.
Specify one of the following: 256, 100, or 10. Recommended values are:

Use 10 when the transfer speed is 10 to 99 Mbps.

Use 100 when the transfer speed is 100 to 255 Mbps.

Use 256 when the transfer speed is 256 Mbps or higher.

NOTE:

This setting does not effect master journals unless the RAID Manager horctakeover

command is used to change a master journal into a restore journal.

For Delta resync Failure, specify the processing that takes place when the delta resync operation
cannot be performed. This option is specified on the primary site only.

•

Entire, the default. The entire P-VOL is copied to the S-VOL.

•

None: No processing is performed; the S-VOL is not updated.

Select None if the delta resync S-VOL is shared in one of the following combinations:

- A BC P-VOL and a THP V-VOL

- An SS P-VOL and a THP V-VOL

- An FS P-VOL and a THP V-VOL

With these combinations, selecting Entire results in a failed full copy. With None, recover
the delta resync S-VOL by deleting the in-system pairs, copying the delta resync P-VOL to
the S-VOL, and then recreating the in-system pairs.

10. Click Set when finished.
11. Review settings in the Preview list in the Journal Operation window.

•

To modify a setting, right click and select Modify.

•

To cancel a setting, right click and select Cancel.

12. Click Apply to apply the settings. If an error occurs, right click the item in the Preview list and

select Error Detail.

Maintaining the system