Similar to Acronis and StorageCraft products, Microsoft has dumped the old file by file backup strategy used since Windows NT and has replaced it with an image backup.
More interesting, however is Small Business Server 2008 does not support tape drives. According to several Microsoft employees assigned to the SBS project, tape is too slow, too fragile, unreliable and inconvenient for the large files generated by the new backup software.
I've heard grumbling about the lack of tape support. Since external disks are so inexpensive, what's the problem?