Compress archives that are backed up using "Copy"
Currently, when a "copy" backup occurs, the archives are copied as-is. Archive files take up a lot of space, but they also compress very well, and since archive backups are rarely accessed, it makes sense to trade off increased access time (due to the additional work of decompression) to get a smaller file size for the archive backups.
The exact method of compression (new file format, put archives in a compressed folder, etc.) will be up to OSIsoft. In my testing, I used disk compression on the archive files.