KnapSac can backup a VMS disk to a Windows disk up to 20 times faster that the Backup utility can perform a similar disk-to-disk backup. A backup which takes hours using the Backup utility can be done in minutes using KnapSac.

The charts below compare the elapsed times to backup a 31 Gigabyte user disk to Windows using KnapSac and a disk-to-disk backup of the same user disk using Backup. The charts vary in the LAN link speed. Comparisons were done on an Integrity Server running VMS 8.3.

1 Gb Network Link

100 Mb Network Link