Virtual TapeServer 6.04.01 Installation Guide

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Installing GFS
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.
After installing GFS, you must configure a fencing method for the cluster. You can configure
Fibre Channel switch fencing if the external storage device is connected over Fibre Channel
(for example, if the HP StorageWorks Modular SAN Array provides a built-in Fibre Channel