GPFS is a concurrent file system. It is a product of IBM and is short for General Parallel File System.It is a high-performance shared-disk file system that can provide fast data access from all nodes in a homogenous or heterogenous cluster of IBM UNIX servers running either the AIX or the Linux operating system. GPFS cluster general commands on AIXPlease read the article GPFS cluster general commands on AIX More on UnixMantra.

Hi,

We have a 21TB GPFS file-system that is built on IBM storage. There
are 18 nodes in the cluster who see the same storage and file-system.

We need to migrate from IBM to EMC storage and i think we need to take
the following steps.
1. Install powerpath.
2. Get EMC storage allocated to the all the nodes in GPFS cluster.
3. Build a 2nd GPFS file-system on the EMC LUNs.
4. Copy the data to the new file-system.
5. Dismantle file-system built on IBM storage and have storage admin
reclaim the LUNs.

We run GPFS 3.3, AIX 6.1 & SDDPCM.

Gpfs Commands

# lslpp -L | grep -i gpfs
gpfs.base 3.3.0.5 C F GPFS File Manager
gpfs.docs.data 3.3.0.1 C F GPFS Server Manpages and
gpfs.msg.en_US 3.3.0.3 C F GPFS Server Messages - U.S.

# lslpp -L | grep -i sdd
devices.sddpcm.53.rte 2.1.0.8 C F IBM SDD PCM for AIX V53

Aix 7.1 Download

# oslevel -s
6100-04-01-0944

Aix 7 1 Gpfs Base Downloads Free

Also I am not sure if two path management software like SDDPCM and
powerpath can co exist.

Storage migration for a shared/clustered file-system is new to us,
please suggest or point us in the right direction.

Thanks,