I have the following backup policy and retention periods below. I've been reading up on Deduplication-to-tape, but not sure if it can be applied to number 3 archive below. From what I read dedup to tape only applies to data on disk. If it is possible I would really like to dedup to tape for the long term archive. Currently it takes about 16 LTO5 tapes for number 3 archive.
Is dedup to tape possible for number 3 below?
Any suggestions if this is not possible.
1. Primary backup to disk. Retention 4 Weeks.
2. Aux Copy to tape. Retention 8 Weeks.
3. Aux Copy to tape (archive). Selective Copy, quartery fulls. Retention Long term (20) years.
Thanks in advance.