Backup Exec requires permanent disk space for the following File System Archiving Option components:
Table: Calculating disk space requirements for the File System Archiving Option components describes the formulas that you can use to estimate the disk space requirements for these components for the File System Archiving Option.
The following values and variables are used in the formulas:
This estimate applies to a mix of files that contain mostly Office 2003 documents. Office 2007 documents do not compress but when mixed with non-Office files, the compression average is 80% of the original size. Pure image files are not compressed.
Table: Calculating disk space requirements for the File System Archiving Option components