HP StorageWorks XP10000 Disk Array - Manual (Page 19)

Configuring LU paths in Fibre Channel environments
After open-system hosts and the array are physically connected by cables, hubs, and so on, you must use
LUN Manager to establish I/O paths between the hosts and logical volumes. This defines which host can
access which logical volume. Logical volumes that open-system hosts can access are referred to as logical
units (LUs). Paths between open-system hosts and LUs are referred to as LU paths.
Before defining LU paths, you must classify server hosts by host groups. For example, if Linux and
Windows hosts are connected to the array, you must create one host group for Linux hosts and another
host group for Windows hosts. Then you must register the host bus adapters for Linux hosts in the Linux
host group. You must also register the host bus adapters for Windows hosts in the Windows host group.
Host groups can contain only hosts connected to the same port, and cannot contain hosts connected
to different ports. For example, if two Windows hosts are connected to port 1A and three Windows
hosts are connected to port 1B, you cannot register all five Windows hosts in one host group. You
must register the first two Windows hosts in one host group and register the remaining three Windows
hosts in another host group.
After classifying server hosts into host groups, you must associate the host groups to logical volumes. In
Figure 2 , the hg-lnx host group is associated with three logical volumes (00:00, 00:01, and 00:02). LU
paths are defined between the two hosts in the hg-lnx host group and the three logical volumes.
HP StorageWorks LUN Configuration and Security Manager XP user guide for the
XP12000/XP10000/SVS200
19