Optimizing Performance; File Compression - Novell NETWARE 6-DOCUMENTATION Manual

Optimizing Performance

File Compression

14
Traditional File Services Administration Guide
If you create a Directory Map object to point to an application, users can
access the application by mapping a drive to the Directory Map object.
If the application's location in the directory structure changes, you can update
the object instead of having to change all users' drive mappings.
This section contains the following topics for optimizing file system
performance:
"File Compression" on page 14
"Salvageable Files" on page 15
"File Purging" on page 15
One way to conserve disk space is to compress files. Use the following
information as background for using file compression to optimize system
performance:
NetWare maintains the original version of a file during compression.
When compression completes, NetWare replaces the original with the
compressed version of the file, provided no errors occurred. If errors do
occur during compression, NetWare leaves the original version intact.
If you have a CD-ROM volume mounted as a volume, treat it as a read-
only volume. Do not use file compression on it.
Compression is a usually a low priority process thread because of
compression's impact on performance. If you flag an item for immediate
compression during peak system usage, performance may deteriorate.
You do not need to separate application files from data files to be
compressed. You can use the SET command to preclude compression of
frequently used applications. For instructions on how to use SET, see
in the Utilities Reference.
Monitor compression activity via the SET command's compress screen
parameter.
Backup applications that use Novell Storage Management Services
(SMS ) back up and restore compressed files. Other applications may
TM
decompress them.
SET
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