Question : What is the best backup media for 20TB?

Hello experts,

I am trying Symantec Backup Exec 2010 R2 nowadays. I am planning to implement it in our company.

The total amount of data which should be backed up will be about 20TB. That includes files, SQL databases, Exchange server mailboxes and Active Directory.

The question is: what is the best media to be used for backup? Shall I use HDDs (2TB each) or tape drives or any other option?

Answer : What is the best backup media for 20TB?

Further to my previous comment. Any backup software  you choose should support block-level de-duplication. This will significantly reduce the amount of disk space required for backups. Some companies offer de-duplication to Tape too. Block level de-duplication can save up to 90% on disk space.

http://www.commvault.com/solutions-deduplication.html

As JNL2000 sad I would all so recommend backing up to disk first and then moving the data to tape.
CommVault has a very good backup solutions which supports de-duplication to disk and to tape.