New Hardware for Backup

Hi,

We have Dell tl2000 and it giving so many issues those are tapes going to bad, frozen and suspended frequently even for new tapes, and backup window time taking long time and not good compression rate.

So planning for new server data domain. Please share other hardware also

So Please share your experience on Data Domain over Dell tape tl2000

and also let me pros and cons over Dell tl2000

and pros and cons disk over a tapes

Our requirement is here

1. Currently we are taking 12TB data backup and feature it may grow 20TB to 30TB

2. Daily Differentional back with 3 month retention period

3. Monthly one full backup with 1year retention period

4. Backup type file sharing (NFS Shares)