Hello Yes, SSDs are not officially supported on the SAS 6/iR. I happen to be running a similar configuration on my home desktop system. I hadn't even noticed that my 840 EVO had negotiated to 1.5. I booted into the SAS 6 controller BIOS and indeed the 840 negotiated to 1.5. I am running my OS on the 250GB 840 EVO and have 2x1TB SATA drives in a RAID 0 for data. The SATA drives are at 3.0. I installed the latest Samsung Magician software: [URL] and used it to update the EVO to the latest firmware. I restarted and booted back into the controller BIOS with no change. It was still negotiating to 1.5. I then stole an interposer from one of my 2950 servers and attached it to the 840 EVO. I booted back into the controller BIOS and it is now negotiating to 3.0, so it would appear that an interposer will allow it to negotiate link speed properly. Thanks
Hello, I've installed on my PE1950 III two drives in SAS 6/iR Integrated (embedded). First one is SAS 73GB 15k which uses 3Gbps and second one is Samsung 840 EVO 250GB (ssd). I know, that these SSD's are not supported by Dell, however it works fine, just one problem: I am having Negotiated speed 1.50Gbps which should be 3Gbps (Maximum read rate I am getting from tests is ~150MB/s, this SSD supports up to 500MB/s). I did not install interposer on SATA disk, while mixing it with SAS hdd on the controller. Could interposer solve the problem and let me use whole 3Gbps of the channel? I have unused interposers at home, but asking, if it is worth going to the datacenter and placing one on the SATA. Thanks in advance!
SAS 6/iR Integrated SAS + SATA (SSD) Negotiated speed PE1950