IBM have made a very handy utility available for estimating the disk space savings for an existing Domino server if it were to be upgraded to 8.5 and Domino Attachment and Object Service (DAOS) enabled.
I ran into a few problems to start with as the initial version of the tool would hang during the process, but version 1.1 is now available and works well (albeit with a small numerical display issue in the final table – anything over 1 million loses the end digit(s)).
Here are the results I got after running the Estimator against a mail file directory on an 8.0.2 server with 1,384 mail files:
Total DB’s analyzed: 1,384
Total DB’s skipped due to errors: 0
Total Size of NSF’s Examined: 335.9 GB
Total Attachments found: 1,027,758
Total Duplicate Attachments found: 664,369
Total DAOS Eligible Attachments: 1,027,758
Estimated Size of DAOSified NSF’s: 101.8 GB
Estimate Size of DAOS dir: 102.0 GB
Total Disk Savings: 145.9 GB
That’s a 43.4% saving in disk space!
