What are typical DP 9.01 with iSCSI and StoreOnce environment back up speeds?

Hi

Would like to get some input regarding the typical backup speeds we can get when using Data Protector 9.01 with a StoreOnce and iSCSI.

Reason I'm asking is because I'm getting filesystem backup speed of about 500-600Mbps through a 10Gb network line.

Are there any benchmarks I can refer to? Hope to get some input on this

Thanks

Ang