@creayt said:
Based on my recent experience w/ an R610 w/ a SAS 6/iR Integrated controller, where we found out late in the game that the controller can't/won't run the SATA SSDs at anything about 1.5 Mbps ( calls it its "negotiated speed" while listing the "3.0 Gbps capable speed" in OpenManage ) while intermingled w/ our other SAS drives, even though they're SATA III drives.
Pretty normal actually.
SAS and SATA do things slightly differently. They are electrically compatible but in order to interact with each other on the same backplane they need to negotiate down to an equal speed. Sounds as though your controller only does it at SATAII on this.
If you gank out the SAS drives, does it go at the right speed then? If you mix, does the SAS drives report and get the right speed?
Best bet is to use another device if you want to have pure SATA SSDs. A small SAN would do the trick.
Better question is, why didn't you get SAS SSDs?