We have an old HP NW 5.1 server (vintage 1998) we are planning to migrate
to a new Dell 2850 running NW 6.5. This server is a repository for
200,000+ transaction files that are all .MDB files. The files are kept
strictly for audit and historical purposes and are only accessed on
occasion. Three years of data are kept on the server and we have archive
backups for 7 years. The old server has compression enabled on a "legacy"
volume. The MDB files compress at about a 10 to 1 ratio which has allowed
us to keep almost 400GB of data on a 50GB volume. The other benefit of
compression is much shorter backup and restore times since our backup
software retains compression on its backups.

The new server has about 600GB of disk space so we could get by without
compression. However, we would need to retain at least one volume (a few
GB in size) with compression to allow restores of any old compressed files
from archive backups.

So the decision is whether or not to use compression on the new NW 6.5 NSS
volumes. One thought I had was to create multiple volumes on the new
server. The primary volume would be uncompressed and hold all
transactions for the current year. Another compressed volume would hold
the prior two or three year's data and would permit restores of any files
from the compressed archive backups.

Anyone here had any bad (or good) experiences with NSS compression? We
have never had any problems on legacy volumes. I know disk space is cheap
(relatively) these days but 10 to 1 space savings is rather attractive.

Comments? Suggestions?