Setting The Host Mode And Host Group Mode For The Disk Array Ports - HP XP20000/XP24000 Configuration Manual

two different clusters of the disk array, and give each host group access to separate but identical
LUNs. This arrangement minimizes the shared components among the four paths, providing both
mirroring and greater failure protection.
NOTE: For the highest level of availability and fault tolerance, HP recommends the use of two
XP disk arrays, one for the Primary disks and one for the Mirror disks.
This process is also called "LUN mapping."
In XP Remote Web Console, LUN mapping includes:
Configuring ports
Enabling LUN security on the ports
Creating host groups
Assigning Fibre Channel ServerNet adapter WWNs to host groups
Mapping volumes (LDEVs) to host groups (by assigning LUNs)
In XP 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 HP StorageWorks XP LUN Manager User's Guide.
Record the LUNS and their ports, WWNs, nicknames, and LDEVs. This information will be used
later to verify 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 XP Remote
Web Console (shown) or XP 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 NonStop is
0C or 2C. Use host mode 2C if you plan to use LUN size expansion (LUSE).
Installing and configuring the disk array 53