I think so though have not tried myself.

This may help.

https://communities.netapp.com/thread/22419

From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Jeff Cleverley
Sent: Friday, May 31, 2013 3:10 PM
To: <Toasters@teaparty.net>
Subject: SAS port speeds

Greetings,

We have a stack of DS4243 shelves for a NearStore running SATA/BSAS drives.  We will be getting some DS4246 with the 4TB FSAS drives.  I know it is supported to put them in the same stack, my understanding is everything in the stack will drop to 3 GB/s speed.

Since the HBAs run 2 ports on one chip, does that one chip control the speed for both ports A/B, or are they separate?

Thanks,

Jeff

--
Jeff Cleverley
Unix Systems Administrator
4380 Ziegler Road
Fort Collins, Colorado 80525
970-288-4611