If the server fails, are you assuming the disk drive containing the log files is not available, therefore you have only a tape backup of the entire database? Doesn't this scenario give an advantage to Veritas since you could set up the logs to backup periodically to tape? Then, we would be able to restore the full Veritas backup and all of the logs backed up by Veritas. We have a 'tape library' available to our server for use by Veritas(according to our net admin). I'm not a 'hardware' person, so I'm not sure if this is something that SQL Server could access directly, but wouldn't this be the ideal solution (creating SQL Server backup files to tape) until the 'time' to run backups to tape became excessive?
Haven't had too many restores with Verias and actually need to do a DR sometime, but I convinced our admin to skip it and just grab the files.
One issue with Veritas backups to tape and disk logs, if the server fails, what do you do? Go back to last night? somewhat defeats the purpose of log backups. Also, if you do need to go back, what's the tape load time? Tape find time? do the tapes go offsite?
Some ammunition to avoid the tape backup.
Also time to backup: you need to take this into account. Disk will be faster (both backup and restore), but you still need to plan for back to tape at somepoint, though this can be disk to tape.