HP 226824-001 - ProLiant - ML750 Podręcznik wdrażania - Strona 17

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Storage requirements

Ensure that the following conditions are met for failover clusters:

• Because improvements in failover clusters require that the storage respond correctly to specific SCSI

commands, the storage must follow the SCSI Primary Commands-3 (SPC-3) standard. In particular,

the storage must support Persistent Reservations as specified in the SPC-3 standard.

• The miniport driver used for the storage must work with the Microsoft Storport storage driver.

• Servers from different clusters must not be able to access the same storage devices (isolate storage

devices, one cluster per device). In most cases, a Logical Unit Number (LUN) that is used for one set

of cluster servers should be isolated from all other servers through LUN masking or zoning.

NOTE

Before starting, the storage administrator must configure several

shared LUNs. It is important that all cluster nodes have access to

the LUNs, and that the host connections are configured to follow

the SPC-3 standard.

Make sure the Windows LH Host mode is enabled for each node on the Enterprise Virtual Array

(EVA) through command view. Depending on what command view you have installed, if in the drop-

down there is no "Microsoft Windows LH" then choose custom and type in the custom type field the

following HEX number 00000004198009A8 (Figure 1). If the wrong connection type is configured,

you cannot share the disks between the cluster nodes and the cluster check will fail with a non-SCSI-3

compliant message.

Figure 1. Configuring EVA host properties