Client-less iSCSI SAN Backup Solution

[crucialx]

We are looking at deploying a HP P4500 SAN in the near future, and are looking for a suitable backup solution. We already plan to use R1Soft for our client based backups, however we would like backups of the SAN without using clients in case of entire SAN failure.

Are there any complete solutions which include both hardware and software at a decent price? If not, can anybody recommend any suitable software to perform this? Ideally we would like a backup solution which scales out with our SAN.