This is on of our stacks:
XXXXXX::> storage shelf show
Module Operational
Shelf Name Shelf ID Serial Number Model Type Status
----------------- -------- --------------- ----------- ------ -----------
1.0 0 XXXXXXXXXXXXXXX DS224-12 IOM12E Normal
1.1 1 XXXXXXXXXXXXXXX DS2246 IOM6 Normal
1.2 2 XXXXXXXXXXXXXXX DS2246 IOM6 Normal
1.3 3 XXXXXXXXXXXXXXX DS4246 IOM6 Normal
1.4 4 XXXXXXXXXXXXXXX DS224-12 IOM12 Normal
4.0 0 XXXXXXXXXXXXXXX DS224-12 IOM12E Normal
4.1 1 XXXXXXXXXXXXXXX DS2246 IOM6 Normal
4.2 2 XXXXXXXXXXXXXXX DS2246 IOM6 Normal
4.3 3 XXXXXXXXXXXXXXX DS4246 IOM6 Normal
4.4 4 SHFGD1703000417 DS224-12 IOM12 Normal
10 entries were displayed.
Our SAS disks can run on 12 Gb/s, our SATA have a 6 Gb/s limit.
It's the plan to replace all IOM6 for IOM12 if that brings a performance boost.