Hp XP Array Manager Software Instrukcja Użytkownika Pobierz pdf (Strona 15)

2 About LUN Manager Operations

The HP storage system can be connected to open-system server hosts of different platforms (for example,

UNIX servers and PC servers). To conﬁgure a system that includes open-system hosts and a storage

system, you must use LUN Manager to conﬁgure logical volumes and ports.

Oneofthe important tasks with logicalvolumeconﬁguration is to deﬁne I/O paths from hosts to logical

volumes. If thepaths aredeﬁned, the hosts can send commands and data to the logical volumes and

receive data from the logical volumes.

After the system begins operating, you might need to modify the system conﬁguration. For example, if

hosts or disks are added, you will need to add I/O paths. Even when the system is operating, you

can modify the system conﬁguration with LUN Manager. You do not need to reboot the system when

changing the system conﬁguration.

Note

• Throughout this manual, logical volumes are sometimes referred to as logical devices (or LDEVs).

• LUN Manager lets you make various settings with logical volumes (LUs). The settings include the

LU path settings. When you conﬁgure a system, you must deﬁne LU paths to let the hosts transfer

data to and from storage.

• It is necessary to change the mode of the HP StorageWorks XP Remote Web Console main

window to the Modify mode to do various settings with LUN Manager. When the background

color of

the icon on the right of the window is light yellow (

), the window is in the Modify

mode. W

hen the background color is gray (

), it is in the View mode. If you click the ( )icon

when the Unlocked icon (

)is displayed,the icon changesto( ) and the mode is changed

to the Modify mode. For details on how to change to the Modify mode, see HP StorageWorks

XP24000 Remote Web Console User's Guide.

Caution:

When you deﬁne the LU paths, you must not use HP StorageWorks XP RAID Manager and

Remote Web Console at the same time.

“Overview of Fiber Channel Operations” on page 15 explains LU path settings in a Fibre Channel

environment.

Overv

iewofFiber ChannelOperations

After

open-system hosts and the storage system are physically connected by cables, hubs, etc., you must

use L

UN Manager to establish I/O paths between the hosts and the logical volumes. This deﬁnes which

host is able to access which logical volume. Logical volumes that can be accessed by open-system

hosts are referred to as logical units (LUs). The paths between the open-system hosts and the LUs are

referred to as LU paths.

Before deﬁning LU paths, you must classify server hosts by host groups. For example, if Linux hosts and

Windows hosts are connected to the storage system, you must create one host group for the Linux hosts

and another host group for the Windows hosts. Then, you must register the host bus adapters of the

Linux hosts in the Linux host group. You must also register the host bus adapters of the Windows hosts

the Windows host group.

Ahostgroup canonlycontain hoststhatare connected to thesameport, andcannotcontain hoststhat

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 group.

You must register the ﬁrst two Windows hosts in one host group and then register the remaining three

indows hosts in another host group.

XP24000 LUN Manager User's Guide

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