Eclipse recommends backing up to multiple destinations wherever possible, echoing the recommendations of CrashPlan themselves:
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 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.
To complement the off-site ABS Online Backup service, many Eclipse customer choose to add an on-site backup destination. The on-site backup destination is typically one of the following:
- Local storage: internal or external (USB) disk attached locally to the server and used as a local folder backup destination.
- Network storage: a UNIX (NFS) or Windows (CIFS/samba) share can be mapped on the local server to be used as a local folder backup destination.
- Peer-to-peer: by installing the CrashPlan PRO agent on another computer on the customer’s network, the computer can be turned into a “backup server” and configured to accept incoming backups from any or all of the customer’s CrashPlan PRO agents.
- Configuring inbound backup folder/directory: settings > backup > inbound backup > “default backup archive location”
If you require assistance configuring an additional backup destination on an existing CrashPlan PRO agent, please contact CrashplanPro Support or open a service request with the Eclipse Systems support team.
Your data is extremely important to us. So important, in fact, that we strongly believe you shouldn’t trust just ANY single provider or destination, even us. We give you the ability to back up to multiple destinations and always recommend that you back up to a local destination (USB drive, local computer, etc) as well as to a remote destination. This yields multiple benefits:
1) Fast backup to the local destination so you’re protected while the slower, remote backup is completing
2) Fast restore from a local destination in situations where a full restore is required (e.g. laptop theft, hard drive failure)
3) Remote backup security in the event of a local disaster (e.g. fire, flood, etc)
Reference: http://support.crashplanpro.com/doku.php/recipe/back_up_to_multiple_destinations