4.0.0 HP Polyserve Matrix Server Administration Guide (T5392-96052, March 2010)

8 Configure PSFS filesystems
Matrix Server provides the PSFS filesystem. This direct-access shared filesystem enables
multiple servers to concurrently read and write data stored on shared SAN storage
devices. A journaling filesystem, PSFS provides live crash recovery.
Overview
Filesystem features
Concurrent access by multiple servers
After a PSFS filesystem has been created, all cluster servers having access to the
device via the SAN can mount the filesystem and subsequently perform concurrent
read and/or write operations to that filesystem. A PSFS filesystem must be consistently
mounted either read-only or read-write across the cluster.
Standard filesystem operations and semantics
The PSFS filesystem is a standard Windows filesystem and supports standard filesystem
operations such as assigning or de-assigning drive letters. These operations can be
performed across the cluster with the Management Console or from the command
line.
The PSFS filesystem also supports existing applications. It uses standard read/write
semantics and does not require any changes to applications.
The PSFS filesystem does not migrate processes from one server to another. If you
want processes to be spread across servers, you will need to take the appropriate
actions.
HP PolyServe Matrix Server administration guide 101