Just to clarify
SDR within Backup Exec provides the ability to restore the volumes that were present in the original system for disaster recovery. However the backup that it is based on is not an Image level backup it is a file level backup. BE can backup to various types of disk storage and tape. Because it is file level, BE cannot recover the databases located in an operating system in a single restore process (with an exception for where the original system are virtualized)
Symantec sells a product called SSR which is an Image level product (sometime called block level because we backup the blocks on the disk not the individual files) that provides similar recovery functionality using an SRD process (I wish we had used different letters for the two processes) SSR also has it's own forum. SSR can only backup to disk storage. However it can recover the databases in the same pass as the volumes so does give a single pass restore.
Also note the term "Bare Metal" does not mean single pass restore so both products do provide a form of bare-metal recovery
Both BE and SSR are windows based products that have some functionality to protect Linux systems. If you have lots of Linux systems however NBU and/or BMR are probably better options as they were designed for Unix/Linux environments with Windows functionality added.
