HP 3PAR Solaris Implementation Guide

Using Symantec Veritas Storage Foundation VxDMP Multipathing
As an option, you can use VxDMP for multipath load balancing and failover. Install a supported
version of Symantec Veritas Storage Foundation VxVM/VxDMP using the Installation and
Administrator's guides. Symantec Veritas Storage Foundation VxVM/VxDMP and its Installation
and Administrator's guides are available from the following website:
Symantec
See the HP SPOCK website for a list of supported Symantec Veritas Storage Foundation
VxVM/VxDMP versions:
HP SPOCK
NOTE: Refer to “HBA Driver/DMP Combinations” (page 82) for supported driver/DMP
combinations.
To enable the Veritas DMP driver to manage multipathed server volumes, install the Array Support
Library (ASL) for HP 3PAR StoreServ Storages (VRTS3par package) on the Solaris host. This ASL
is installed automatically with the installation of 5.0MP3 and above. For older versions of VxDMP,
the ASL will need to be installed separately.
• Install the VRTS3par package from the VRTS3par_SunOS_50 distribution package for
Veritas Volume Manager versions 5.0 and 5.0MP1.
These VRTS3par packages are available on the following website:
Symantec
NOTE: Some distributions of the Veritas software include a VRTS3par package that is copied
to the host server as the Veritas software is installed. This package is likely to be an older VRTS3par
package (version 1.0 or 1.1), which should not be used. Instead, install the current VRTS3par
package from the Veritas support site.
The following setting on the enclosure is required if long failback times are causing some concern.
This enclosure setting can be used with 5.0GA, 5.0MP1, 5.0MP3 and 5.1GA VxDMP:
# vxdmpadm setattr enclosure <name> recoveryoption=timebound iotimeout=60
If not set, I/O will eventually failback to the recovered paths. The default value for the enclosure
is "fixed retry=5".
To return the setting to default:
# vxdmpadm setattr enclosure <name> recoveryoption=default
As of 3PAR OS 3.1.2, the virtual volume (VV) WWN increased from 8 bytes to 16 bytes. The
increase in WWN length may cause the Symantec ASL to incorrectly identify the array volume
identification (AVID) number, subsequently resulting in use of a different naming convention for
DMP disk devices.
NOTE: This issue does not occur with Storage Foundation 6.1, which is compatible with both
8-byte and 16-byte WWNs.
The standard naming convention is as follows:
<enclosure_name><enclosure_number>_<AVID>
For example:
3pardata4_5876
3pardata4_5877
32 Configuring the Host for a Fibre Channel Connection