Medical Archive Solutions User Guide

HPMA User Guide
102
HP Medical Archive
FSG—File System Gateway
The File System Gateway (FSG) provides a virtual file system interface
using CIFS (Windows) or NFS (Unix/Linux). This allows any type of
fixed content, such as lab results, doctors notes, audio, video, and
diagnostic images, to be stored on the grid. This enables the sharing of
imaging studies between numerous applications. Specifically, all
Picture Archiving and Communication Systems (PACS) can seam-
lessly store and retrieve images on the grid without the need for
proprietary interfaces.
The HP Medical Archive has two FSG services paired in the base repli-
cation group. The Primary FSG provides the normal gateway access
into the grid for read and write operations. The Secondary FSG
provides a “mirror” of the file system and is used to generate daily
backups. The Secondary FSG supports read-only gateway access.
There can be up to two replication groups in the HP Medical Archive
(base and expansion). The nodes used to host the Secondary FSG vary
based on the type of deployment, Single Site or Single Site + DR.
The Secondary FSG automatically stores a backup of the managed file
system into the grid each day. Activity that takes place after the
backup is retained as a “replication session”. Both the Primary and
Secondary retain the replication session messages.
Table 38: FSG Host Nodes
Single Site Primary FSG Secondary FSG
Base Group GN1-A-1 AN1-A-1
Expansion Group GN1-A-2 GN2-A-2
Single Site + DR Primary FSG Secondary FSG
Base Group GN1-A-1 GN1-B-1
Expansion Group GN1-A-2 GN1-B-2