Membership Partitions; Snapshots; Dynamic Volume And File System Creation - HP StorageWorks XP10000 - Disk Array Configuration Manual

Membership partitions

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.
HP Scalable NAS can use either one or three membership partitions, but to ensure that a membership
partition is always available, we strongly recommend that you use three membership partitions.
HP recommends that you create three LUNs for the membership partitions. Each LUN should be a
minimum of 1 GB in size. It is important to partition the membership partition LUNs, which are
represented to the operating system as SD devices, appropriately before HP Scalable NAS is
configured. (For example, use the fdisk or similar tool.)

Snapshots

To take hardware snapshots on XP storage arrays, you must install the latest version of firmware on
the array controllers. Also, the latest versions of XP Business Copy and XP Snapshot must also be
installed on the array controllers. On the servers, you must install and configure the latest version of
XP RAID Manager, with both local and remote HORCM instances running on each server, and with
all file system LUNs (P-VOLs) controlled by the local instance and all snapshot V-VOLs (S-VOLs) controlled
by the remote instance.

Dynamic volume and file system creation

When the LUNs have been presented to all nodes in the cluster, import them into the cluster using the
GUI or the mx command. After the disks are imported, you can then use them to create dynamic
volumes and file systems, and mount them on the cluster nodes.
For details on importing and deporting disks, dynamic volume creation and configuration, and file
system creation and configuration, see the HP StorageWorks Scalable NAS File Serving Software
Administration Guide.
32 HP Cluster Gateway deployments