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C HP Cluster Gateway deployments

The HP Cluster Gateway and HP Scalable NAS software both use the HP PolyServe software as their

underlying clustering technology and both have similar requirements for the XP disk array. They have

both been tested with the XP disk arrays and this appendix details configuration requirements specific

to XP deployments using HP PolyServe Software on Windows.

For details on installing and configuring the HP PolyServe software, see the HP PolyServe Matrix

Server Installation Guide.

For any XP-specific requirements, see the Enterprise Scalable NAS Products and Solutions Compatibility

Matrix, which you can download from

SupportManual/c01336151/c01336151.pdf.

HP recommends using the HBA drivers specifically supported by the XP array. Other drivers will work,

but may not produce optimal results during failure or failover situations.

While using the HP PolyServe software, many servers could be accessing the same LUNs on the array

and may cause the host servers to put a lot of I/O stress on the LUNs. You may need to reduce the

HBA queue depth to prevent the host servers from overrunning the LUN.

The HP Cluster Gateway and HP Scalable NAS software running on Windows should use the Full

Featured DSM driver for XP arrays as their multipath I/O solution.

To work correctly with the HP PolyServe clustering technology, all LUNs on the disk array need to be

presented identically to all nodes in the cluster. Before using the LUNs for membership partitions or

file systems, create a Windows partition table on the LUNs using a tool such as Logical Disk Manager

or DiskPart, but do not put an NTFS file system on it and do not assign it a drive letter.

The partition table should be created from one node in the cluster. When it is subsequently imported

into the cluster, the other nodes will then have visibility to it.

HP Scalable NAS uses a set of membership partitions to control access to the SAN and to store the

device naming database, which includes the global device names that HP Scalable NAS assigns to

the SAN disks placed under its control. The membership partitions must be placed on the SAN, not

on local storage.

http://bizsupport2.austin.hp.com/bc/docs/support/

XP Disk Array Configuration Guide: Windows