Just to be clear... Each controller connects to each "side" of the back-end via a 2x wide SAS port. So each 2x wide port has 6 Gb/s bandwidth.
One side goes into a SAS expander on the same controller and one side goes through the SAS expander on the other controller (assuming an array with 2 controllers). Each drive in the controller tray is connected to each of the SAS expanders via a single SAS lane, and the expansion ports on each controller is 4x wide and connected to that controllers' SAS expander. So theoretically, there is more bandwidth on a 25xx back-end than on a 6140. The 6540 is a different beast..... -Joel This message posted from opensolaris.org _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
