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Secure Remote Backup for Desktops (SRBD)- FAQ

How do I reset my password?

Please visit the SRBD password reset site

How often does SRB for desktops backup my files?

Backup frequency and version retention can be set at the client or at the organization policy level based on these settings

Will SRB for desktops backup open files?

Yes, on OS X and Linux, you can back up any open file. On Windows, CrashPlan uses Microsoft's Volume Shadow Copy Service. If the application that created the open file does not support VSS, CrashPlan retries until the file is not busy.

How does SRB for desktops backup work?

The first backup is a full backup. To minimize bandwith and storage requirements, use differential backup, data de-duplicaiton and compression. After the first backup completes, subsequent backups are of changed or new information. SRB uses data de-duplication at the block level, so that even repeated information with a file, as well as across all files, is not backed up necessarily. As well as compress to compress changed or new information before the backup is sent.

Will SRB for desktops encrypt my data before sending it across the network?

Yes, SRB encrypts your data before it sends across the network. It uses 448-bit Blowfish encryption to safegurad your backup. For additional information on Blowfish encryption, please visit

Can SRB for desktops be used to backup servers?

No, this service is designed to backup desktops only. For information on how to backup a server, please visit BIU Service

Will SRB for desktops continue to run when I am logged out or logged in as a different user?

If you are using a Windows computer, CrashPlan will always continue to back up because it runs as a background service.

If you are using a Macintosh computer, CrashPlan will always continue to back up unless it was specifically installed as “Run as User”.

What happens to my selected data?

Data is de-duplicated at the block level, compressed and encrypted before it leaves the source computer. This de-duplicated, compressed and encrypted data is then sent to the backup destination and stored within files of up to 4 GB in size. Each source computer has its own folder at the destination containing its own backup data. The data stored on the destination is not human readable and can only be viewed via the SRB software.

What are the customizable 'default client settings'?

Here are the 'default client settings' that can be modified on the Org level.

How do I reconnect to an existing backup archive in the event of a hard drive replacement or migration to a new computer?

For step-by-step instructions on how to reconnect to an existing backup archive please visit Crashplan Tutorials




Information Systems and Computing
University of Pennsylvania
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