HP 3PAR AIX and IBM Virtual I/O Server Implementation Guide

7. Reboot the AIX system after the bosboot command completes.
8. If the AIX system had previously defined HP 3PAR StoreServ Storage VVs, the hdisk definitions
appear as 3PAR InServ Virtual Volume. Any newly created or exported HP 3PAR
StoreServ Storage VVs will also have characteristics similar to those shown below:
# lsdev -Cc disk
hdisk0 Available 10-60-00-10,0 16 Bit LVD SCSI Disk Drive
hdisk1 Available 20-58-01 3PAR InServ Virtual Volume
hdisk2 Available 20-58-01 3PAR InServ Virtual Volume
hdisk3 Available 20-60-01 3PAR InServ Virtual Volume
hdisk4 Available 20-58-01 3PAR InServ Virtual Volume
hdisk5 Available 20-60-01 3PAR InServ Virtual Volume
hdisk6 Available 20-60-01 3PAR InServ Virtual Volume
Existing HP 3PAR virtual volumes or any newly created or exported HP 3PAR StoreServ Storage
VVs has a default queue depth of 16 defined. To display this value, issue the following
command on the AIX CLI, where x is the hdisk number/definition.
# lsattr -El hdiskx | grep queue_depth
If required, changes may be applied to the new default queue depth of the HP 3PAR StoreServ
Storage Virtual Volumes. Any change made to the queue depth requires a system reboot to
become effective.
To change the device attribute for queue depth issue the following command on the AIX CLI:
# chdev -l hdiskx -a queue_depth=yy -P
Installing the Veritas DMP Multipathing Modules
If Veritas Volume Manager is used for AIX in Storage Foundation, follow the Veritas Volume
Manager Installation and User Guide, available on the Symantec website at: www.symantec.com
Install all prerequisite APARs as required in the Veritas Installation Guide for AIX.
The Veritas DMP layer in Veritas Volume Manager does not recognize the storage server volumes
as multipathed until HP 3PAR ODM 3.1 software for Veritas VxVM is installed.
The HP 3PAR ODM 3.1 software for Veritas VxVM can be downloaded from the Symantec website
at: www.symantec.com
Configuring the Veritas DMP Multipathing
There are no special considerations or configuration modifications when using the HP 3PAR
StoreServ Storage, as long as the HP 3PAR ODM 3.1 software for Veritas VxVM is installed.
Connecting the Host Server with a Fibre Channel Reservation Policy
A reservation policy, which determines the type of reservation methodology that the device driver
implements when the device is opened, can be used to limit device access from other adapters,
whether the adapters are on the same system or another system. The reservation policy on an HP
device is controlled by the predefined ODM attribute reserve_policy. You can change the
value of reserve_policy by invoking the AIX chdev command on an HP 3PAR MPIO device.
Three different reservation policies can be set on HP 3PAR MPIO devices:
26 Connecting the Host Server with Fibre Channel