DUMPAAEnable

The product DUMPAAEnable, version B.11.23.0609.01, enables high-availability features for HP's Active-Active Disk Arrays when configured as dump devices.

The product Securepath, version A.3.0F.02F.00F or higher, is also required to be installed along with this product on the system, for enabling these features.




	NOTE: DUMPAAEnable is available on the Software Pack (SPK) media for June 2007. For more information about SPK, see “Software Pack (Optional HP-UX 11i v2 Core Enhancements)”.

Summary of Change

Summary

DUMPAAEnable provides the following features:

Active path configuration:
An Active-Active device can be configured as a dump device through any of the paths to the device. If the path through which dump configuration is being attempted is currently offline, then an alternate active path will be used for configuration. The alternate path that is used for configuration can be displayed with the help of the new option, -l, to crashconf(1M). If all the paths to the device are offline, then configuration will fail.
Failover/Path change:
If the path that was used for dump configuration goes offline, then an alternate active path will be automatically configured for dump. The current active path configured for dump can be displayed with the help of the -l option to crashconf(1M).
Duplicate device identification:
An Active-Active device will have multiple device special files (/dev/dsk/c#t#d# files), one corresponding to each path to that device. Re-configuration of an existing Active-Active dump device through an alternate device special file will be detected and the configuration will fail.
Display live and configured path:
The new option, -l, added to crashconf(1M) can be used to display both the user configured path and the current active path configured for dump.
LUN Collision:
Dump devices under LUN collision are removed from the dump device list to avoid dump corruption.

Impact

Installing this product without the SecurePath Version A.3.0F.02F.00F will have no effect. Along with Securepath, this product increases the availability of dump.

Compatibility

This product has no impact to compatibility. A new option has been added to crashconf(1M) to return additional information pertinent for Active-Active devices.

Performance

There is no impact to system performance.

Documentation

For further information, see the crashconf(1M) manpage.

Obsolescence

HP-UX 11i v3 has native support for multi-pathing and the features provided by this product will be part of the base OS. Therefore this product will be discontinued for future releases of HP-UX.