Replica provides agents only for other NetWare and Windows NT servers, whereas the other two products offer agents for almost every server and desktop OS under the sun. Backup Exec bundles agents for Windows 3. ARCserve for Windows NT offers an even more impressive array, bundling agents for Windows 3. If the reason you back up is not wanting to lose any data or productivity, then you want your data back right away when your server crashes. Fortunately, all of the products in this roundup offer some form of disaster recovery to keep downtime to a minimum.
Replica offers the simplest and fastest approach to disaster recovery.
Recovery comes with every version of Replica, unlike ARCserve and Backup Exec. All you have to do is create a handful of disks and full backup to a tape device. If the server dies, you can boot from the disks and recover your backup within an hour. ARCserve and Backup Exec make you reinstall part of the OS before restoration. Though this works, it's more complicated and takes more time.