HP StorageWorks XP Remote Web Console Software - Manual (Page 14)

14 LUN Manager for the XP1024/XP128
Host storage domains
A host storage domain can contain only hosts that are connected to the same port and cannot contain
hosts that are 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 storage domain. You must register the first two Windows hosts in one host storage domain and the
remaining three Windows hosts in another host storage domain.
After server hosts are classified into host storage domains, you must associate host storage domains to
logical volumes. In Figure 1 , the host storage domain hg-lnx is associated with the logical volumes 00:00,
00:01, and 00:02. LU paths are defined between the two hosts in the hg-lnx group and the three logical
volumes.
Figure 1 LU paths configuration in a Fibre Channel environment
LUN Manager lets you define paths between a single server host and multiple LUs. In Figure 1 , both hosts
in the hg-lnx host storage domain can access the three available LUs.
LUN Manager lets you define paths between multiple server hosts and a single LU. In
Figure 1 , the LU
identified as CU-LDEV 00:00 is accessible to the two hosts in the hg-lnx host storage domain.
In
Figure 1 , the LUs associated with the hg-lnx domain are addressed by numbers 0 to 2. The address
number of an LU is referred to as the logical unit number (LUN). When HP StorageWorks Continuous
Access XP and other optional features manipulate LUs, they use LUNs to specify the LUs to be
manipulated.
You can add, change, and delete LU paths when the system is operational. For example, if new disks or
server hosts are added to your disk array, you can add new LU paths. If an existing server host is to be
replaced, you can delete the corresponding LU paths before replacing the host. You do not need to restart
the system when you add, change, and delete LU paths.
Port
Host Storage Domain
Host Groups