SVS200 LUN Manager and Volume Manager (T1714-96015, October 2007)

NOTE:

• In Fibre Channel environments, you can deﬁne up to 1,024 LU paths for one host group and up to

1,024 LU p a t h s f o r o n e p o r t.

• You cannot deﬁ ne LU paths to LUN On-Demand volumes.

• You cannot deﬁne LU paths to volumes reserved by Auto LUN XP.

• You can create up to 255 host groups for one Fibre Channel port.

• You cannot deﬁne LU paths to journal volumes.

• You cannot deﬁne LU paths to pool volumes.

Conﬁguring LU paths in iSCSI 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 iSCSI targets. For example, if Linux and

Windows hosts are connected to the array, you must create one iSCSI target for Linux hosts and another

iSCSI target for Windows hosts. Then you must register the host bus adapters for Linux hosts in the Linux

iSCSI target. You must also register the host bus adapters for Windows hosts in the Windows iSCSI target.

iSCSI targets 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 iSCSI target. You must

hosts in another iSCSI target.

After classifying server hosts into iSCSI targets, you must associate the iSCSI targets to logical volumes. In

Figure 3,thehg-lnx iSCSI target 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 iSCSI target and the three logical volumes.

HP StorageWorks LUN Conﬁguration and Security Manager XP user guide for the

XP12000/XP10000/SVS200