Virtual TapeServer 6.04.04 for NonStop Servers Operations and Administration Guide

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Maintaining GFS for VTS
The Global File System (GFS) is an advanced feature that allows Linux servers to
simultaneously read and write files on a single shared file system on a SAN. VTS is based on
Linux, and GFS enables multiple VTS servers to access a shared set of pools and virtual
tapes. The Event Management Service (EMS) can then automatically mount virtual tapes
from the GFS pools as if they were separately mounted. Here is an example GFS
configuration:
With GFS, all VTS servers connect to each other over Fibre Channel to the same storage
array, and GFS allows each VTS to access all vaults at the same time. If a server becomes
unavailable, other servers can still access the vaults.
Note This appendix provides common procedures for maintaining GFS using the command
line. You can also use the cluster administration user interface to manage GFS. For
complete information about this user interface, refer to http://www.redhat.com/docs/
en-US/Red_Hat_Enterprise_Linux/5.2/html/Cluster_Administration.