3.7.0 HP StorageWorks HP Scalable NAS File Serving Software installation guide HP Scalable NAS for Linux (AG513-96004, October 2009)

Create luns or disk partitions for 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. To ensure that
a membership partition is always available, we strongly recommend that you use
three membership partitions.
We recommend that you use your disk array software to create three LUNs for the
membership partitions. Each LUN should be a minimum of 1 GB in size. If you cannot
dedicate LUNs to the membership partitions, instead create a separate partition on
three of your shared LUNs and put the membership partitions on those partitions.
If the LUNs you intend to use for membership partitions are much larger than the
recommended 1 GB and you want to use this remaining space for a filesystem, the
data in the filesystem should be static in nature and lightly accessed. Placing a heavily
accessed filesystem on the same LUN with a membership partition can potentially
cause contention issues. It is also recommended that you use this space only as a
basic volume (psd) and never as a component of a dynamic volume (psv).
If you create an extended partition on an MBR disk, you will need to place one or
more logical drives inside of it. An extended partition cannot be used by itself.
NOTE:
It is important to partition the newly created LUNs, which are represented to the
operating system as sd devices, appropriately before HP Scalable NAS is configured.
(For example, use fdisk or a similar tool.) If you later need to repartition a disk
containing a membership partition, you will need to unmount any PSFS filesystems
on the disk, replace the membership partition, deport the disk, modify the disk
partitions as necessary, reimport the disk, and then reuse the membership partition.
Install HP Scalable NAS and FS Option for Linux20