The Backup Central Wiki has six sections

FAQs and Wikis for Backup Software

These are user-editable FAQs for NetBackup, NetWorker, & TSM.

Directories of Backup Service Providers

These companies will either manage the backup system you already own or will provide a complete backup and recovery system as a service.

Directories of Backup Software

They include free backup software, commercial backup software, data protection manager software, CDP, near-CDP, & De-duplication backup software.

Directories of Backup Hardware

The directories include tape drives, disk-as-disk targets, and virtual tape libraries.

Backup Book Wiki

This contains updates on chapters of the Backup & Recovery book, as well as archived versions of chapters from Unix Backup & Recovery that didn't make it into this book.

Free Stuff

Free backup software and free online versions of selected chapters from Backup & Recovery.

Miscellaneous

Right now, we've got some bare metal recovery options.