Setting The Host Mode And Host Group Mode For The Disk Array Ports - HP StorageWorks P9000 Configuration Manual

Assigning Fibre Channel adapter WWNs to host groups
Mapping volumes (LDEVs) to host groups (by assigning LUNs)
In Command View Advanced Edition, LUN mapping includes:
Configuring ports
Creating storage groups
Mapping volumes and WWN/host access permissions to the storage groups
For details see the HP StorageWorks P9000 Provisioning for Open Systems User Guide. Note the
LUNs and their ports, WWNs, nicknames, and LDEVs for later use in verifying host and device
configuration.

Setting the host mode and host group mode for the disk array ports

After the disk array is installed, you must set the host mode for each host group that is configured
on a disk array port to match the host OS. Set the host mode using LUN Manager in Remote Web
Console or Command View Advanced Edition Software. If these are not available, the HP service
representative can set the host mode using the SVP. The host mode for AIX is 0F.
CAUTION:
to AIX hosts. Do not select a mode other than 0F for AIX. Changing a host mode after the host has
been connected is disruptive and requires the server to be rebooted.
When a new host group is added, additional host group modes (options) can be configured. The
storage administrator must verify if an additional host group mode is required for the host group.
The following host group modes are available for AIX:
Table 22 Host group mode (option) IBM AIX
Host
Group
Mode Function
2 Veritas Storage Foundation for Oracle RAC,
DBE+RAC Database Edition/Advanced
Cluster for Real Application Clusters or if
Veritas Cluster Server 4.0 or later with I/O
fencing function is used.
22 This Host Group Mode can change the
response to the Host when a reserved device
has received a mode sense command
unrelated to the Reserve. The effects of this
mode are:
1.
2.
Host Group Mode 22 = OFF - Reserve
Conflict response
Host Group Mode 22 = ON - Normal End
response
88 IBM AIX
The correct host mode must be set for all new installations (newly connected ports)
The retry time is shortened for device
recognition (several tens of ms/LU)
Warning messages are prevented from
being generated in the OS log
Even if the option is not set ON, no
operation error(s) are caused for Veritas
Cluster Server Software
Default Comments
Inactive Previously MODE186
Do not apply this option to
Oracle Cluster.
Inactive