Exchange backup to deduplication storage or not?
I'm wondering what are your thoughts about this process...
We currently backup our Exchange 2010 server like so. Full backup (MB database and logs) once a week, send it to our deduplication storage and then, duplicate the job to another deduplication storage offsite and also duplicate it to the tape. Incremental everyday to simple disk and duplicate it to another simple disk offsite.
When the duplicate job for the tape run, the speed is very slow, yes I know, it's because of the rehydratation process. The total size of the data is almost 1 TB. So the job take, on average, 2 days to run, plus or less 48 hours. During that time, the tape is unavailable for other, critical jobs.
I need that tape drive for other jobs, 2 days is too long for me, I want to submit to my boss, the architect of the infrastructure, the point that we should store the full backup to a simple disk storage instead of the deduplication store so that the job of the duplication to the tape is much faster.
The point that he will make is that we save a lot of space when storing the full exchange backup to the deduplication storage.
But I'm wondering if we save that much space by sending the backup to the dedup storage. I can't find the info of the space that the backup of Exchange take on the dedup itself.
What is your experiences and thoughts about this process?
Thx for sharing.