What is the difference between Defrag.NSF and Compact?
A. The primary function of Compact is to recover usable free-space within a Domino database and optionally eliminate all free space. This is done with no regard to the physical layout of the database file on the disk – this is the operating system’s job. Unfortunately Windows NTFS has a nasty habit of scattering data all over the disk. This is known as file fragmentation. When a file is fragmented the heads on the drive arm need to move (seek) to different tracks to read and write data. This physical operation takes a significant amount of time and reduces data throughput. Defrag.NSF tackles this file fragmentation issue by re-ordering the file and making sure that it is stored in a single contiguous location on the disk, reducing I/O and improving performance.