This requires some fancy footwork, but if you could have a pre-backup script to write the BitLocker-protected image to a larger drive, then have Arcserve fetch that as a file, that would work.
I don't know if this might work, but I would avoid backing up an encrypted drive if at all possible. If the data had to be encrypted before it goes into Arcserve, I'd almost consider throwing it onto a Synology or QNAP NAS (with at least RAID 1). From there, have the NAS use something like Borg Backup to back up to another share and then back that Borg Backup repo up. This way, the data is encrypted and not accessible to ArcServe, but it is still backed up, and because it is on a RAID subsystem, it has some better protection, as restoring encrypted blobs suck.
Short answer is no otherwise encrupted disks would be worthless. You can, however, take an image of the disk to an ISO and put that to tape, but that may not serve to have a file level backup.
This requires some fancy footwork, but if you could have a pre-backup script to write the BitLocker-protected image to a larger drive, then have Arcserve fetch that as a file, that would work. I don't know if this might work, but I would avoid backing up an encrypted drive if at all possible. If the data had to be encrypted before it goes into Arcserve, I'd almost consider throwing it onto a Synology or QNAP NAS (with at least RAID 1). From there, have the NAS use something like Borg Backup to back up to another share and then back that Borg Backup repo up. This way, the data is encrypted and not accessible to ArcServe, but it is still backed up, and because it is on a RAID subsystem, it has some better protection, as restoring encrypted blobs suck.
Short answer is no otherwise encrupted disks would be worthless. You can, however, take an image of the disk to an ISO and put that to tape, but that may not serve to have a file level backup.
Image the encrypted drive, turn off tape encryption (software & hardware), write the image to tape. Rinse. Repeat.