Virtual TapeServer 8.3 Configuration 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.
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.
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. Refer to this URL for information about GFS and how to
install a broader range of tools: http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_
Linux/5.2/html/Global_File_System/index.html.