HP ProLiant BL660c Implementing Microsoft Windows Server 2008 on HP ProLiant s - Page 17

Storage requirements, Configuring EVA host connections

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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. Configuring EVA host connections 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 dropdown 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 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.
Configuring EVA host connections
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
17