HP StorageWorks XP Remote Web Console Software - Manual (Page 17)

Configuring LU paths
Use XP LUN Configuration and Security Manager Software to make various settings for logical volumes
(LUs), including LU path settings. When you configure a system, you must define LU paths to let hosts
transfer data to and from storage.
CAUTION:
When defining LU paths, you must not use RAID Manager XP and XP Remote Web Console at the
same time.
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 XP LUN Configuration and Security Manager Software 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.
XP LUN Configuration and Security Manager User Guide 17