HP XP LUN Configuration and Security Manager Software - Manual (Page 11)

LUN Configuration and Security Manager XP user guide for the XP10000/XP12000 11
1 LUN Manager for the XP10000/XP12000
You can connect XP arrays to open system and mainframe hosts using Fibre Channel. Use LUN Manager to
configure host groups, logical units (LUs), and Fibre Channel ports.
LU configuration overview
One of the important tasks in logical unit (LU) configuration is to define I/O paths from hosts to LUs. After
the paths are defined, the hosts can send commands and data to the LUs and can receive data from them.
LUN Manager can also configure security policies to protect LUs from unauthorized access.
Fibre Channel environment
In a Fibre Channel environment, you must configure the Fibre Channel ports on the disk array. With LUN
Manager, you can set addresses and speed, and specify topology for Fibre Channel ports.
Supported emulation types
LUN Manager supports the following device emulation types:
• OPEN-3, OPEN-9, OPEN-8 (XP128/XP1024 only), OPEN-E, OPEN-L, and OPEN-V for open systems
• 3390-3A/B/C and 3380-KA/B/C for mainframe systems
LU paths
After hosts and the disk array are physically connected by cables, switches, and so on, use LUN Manager
to establish paths between the hosts and LUs. These paths are called LU paths and they determine which
host can access which LU.
• Up to 256 LU paths can be defined for a host group in a Fibre Channel environment
• Up to 1,024 LU paths can be defined for a Fibre Channel port for the XP10000/XP12000 array
• Up to 256 host groups can be defined for a Fibre Channel port for the XP10000/XP12000 array
• Up to 65,536 host groups can be defined for one disk array (256 x 256)
• Up to 255 hosts can be included in all the host groups for one Fibre Channel port
Configuring LU paths in a Fibre Channel environment
Before defining LU paths, you must classify server hosts by host storage domains. For example, if Linux and
Windows ® hosts are connected to the disk array, you must create a separate host storage domain for each
host type. When this is done, register the host bus adapters for each host type in the appropriate host
storage domain.
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,