CrashPlan works very hard to verify the integrity of your data and to repair corrupted archives before you need to restore. However, CrashPlan is not always able to recover from corruption before a restore is needed, hardware fails, system administrators fat-finger commands, and “lightning” can strike anywhere. So we always recommend that people use multiple backup destinations whenever possible.
Backing up to multiple destinations provides onsite backups for fast and convenient restores and offsite backups in case there is a problem at the local site. CrashPlan PRO supports multiple destinations to provide the highest level of availability and protection at no additional cost, because a client (or slave server) backup destination does not consume a seat license.
Your backup destinations can be a location with either PRO Server or a PRO Client installed, or even an external hard drive attached to a client. CrashPlan PRO is so flexible you can back to a combination of PRO Servers and PRO Clients, and locally attached drives.
Destinations can also be local or they can be remote. A local destination can be a computer on your local network (fast), a USB drive attached to your computer (faster), or another disk attached directly to your motherboard (fastest). A remote destination is one that requires an Internet connection and are generally slower than local destinations.
To maximize your protection and convenience, we recommend backing up to a combination of local and remote destinations.
Backing up to multiple destinations provides the following these benefits:
The PRO Client automatically selects which location to back up to based on which location will complete first. If you are doing an initial backup to a local folder and to the PRO Server across the Internet, your PRO Client will complete backup to the local folder and then complete backup to the PRO Server. This ensures you're fully protected at one destination as soon as possible.