Salesforce.com’s three state-of-the-art data centers feature carrier-class bandwidth and the latest infrastructure already configured to serve 1.5+ million subscribers. The facilities are linked through a dedicated OC-48 backbone, providing real-time failover and point-to-multipoint replication as well as disk-to-disk-to-tape backups. They include biometric scanning, "lights out"/opaque cages, video and infrared surveillance, intrusion-detection scanning and security audits.

The salesforce.com backup policy
 

• All networking components, SSL accelerators, load balancers, Web servers, and application servers are configured in a redundant configuration.
• All customer data is stored on a primary database server that is clustered with a backup database server for redundancy.
• All customer data is stored on disk storage that is mirrored across different storage cabinets and controllers.
• All customer data, up to the last committed transaction, is automatically backed up to a primary tape library on a nightly basis.
• Backup tapes are immediately cloned to a second tape library to verify their integrity, and the clones are moved to secure, fire-resistant, off-site storage on a regular basis.
• Disaster recovery plans are in place.  

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