PERC H730 and mix of SAS 12Gbps and SATA 6Gbps

Hello everyone,

I am looking into having the following arrangement on a PERC H730:

1x RAID1 volume w/ (2) 960GB 6Gbps SATA drives

1x RAID10 volume w/ (8) 1.8TB 12Gbps SAS drives

Should I expect the whole bus to drop to SATA 6Gbps specs?

Should I have the volumes on separate controllers (i.e. 1 on server, other on DAS) for maximum performance?

Thanks for the input!