Host Server Performance - Novell NETWARE 6-DOCUMENTATION Manual

Host Server Performance

102 Storage Management Services Administration Guide
To help you make a decision about whether to compress or decompress your
backed up data, follow these guidelines:
Backups are faster if files already compressed are left compressed.
Compression is not supported in some environments (such as a NetWare
3.11 server, a DOS workstation, or Novell Storage Services
intend to restore a file that is currently compressed to an environment that
does not support compression, back it up in a decompressed state.
The SBCON utility has no compression feature, so it cannot compress a
file that is currently decompressed.
If volume compression is turned on and you back up compressed files in
a decompressed state, restore speed is degraded if you overwrite existing
files.
To improve restore speed, delete the files you no longer want from the
hard disk before restoring them from the backup media. If you back up
compressed files in a compressed state, restore speed is not affected.
You might run out of disk space if you restore decompressed files to a
volume that compresses files.
The speed of the SBCON utility depends upon the configuration of the host
server and whether the server is backing up its own data or that of another
server or workstation.
For information on server configuration and setting parameters, see
Communications Parameters and File Caching Parameters under
NetWare Utilities Reference.
A server backing up its own data runs about twice as fast as a server backing
up data from another server.
This section includes four options using LOAD and SET commands that can
enhance your host server's performance.
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