What is GPFS
IBM General Parallel File System (GPFS) is a high performance parallel filesystem featuring storage virtualization, high availability and is designed to manage large amounts of file data, You can find out more about GPFS in this introduction.
Checking your gpfs quota with /usr/local/bin/myquota
In this example, user gtsai will check her GPFS quota from a linux command line.
# /usr/local/bin/myquotaDisplaying quota usage for user gtsai
--------- Space (KB) ---------
FileSystem FileSet Usage Quota Path
---------------- ---------------- ------------------ ------------------ ----------------------------------
fermi-fs2 gtsai 39,328 1,048,576 /gpfs/slac/fermi/fs2/u/gtsai
des-fs1 gtsai 39,328 3,145,728 /gpfs/slac/des/fs1/u/gtsai
kipac-fs1 gtsai 39,328 2,097,152 /gpfs/slac/kipac/fs1/u/gtsai
scs-fs1 gtsai 480 10,485,760 /gpfs/slac/scs/fs1/u/gtsai
staas-fs1 gtsai 0 20,971,520 /gpfs/slac/staas/fs1/u/gtsai
staas-fs1 gtsai 0 20,971,520 /gpfs/slac/staas/fs1/u/gtsai
GPFS building block
Below is a schematic of a typical SCS GPFS storage building block. It includes two file servers, two storage servers and two storage arrays. The two sets of servers operate in ACTIVE/ACTIVE mode, but also provide failover capability as needed. This example would provide 320 TB of space. Local iozone tests show max write ~4GB/sec, max read ~6GB/sec, using large block sequential I/O.
