I have small setup to test hard drive throughput and to test different drive combinations and i just ran into a small problem that I would appreciate some feedback on!
The setup is made up of a S3000AH motherboard with a SRCSASLS4I RAID controller without a battery backup unit. The RAID controller is connected to two AXX4DRV3GEXP 4 drive expanders for a total of 8 drives.
Each expander is connected to one of the RAID controller's 4 output ports. The other two ports on the RAID controller are not connected to anything.
The expanders have been flashed to the latest version of their software, version 2.14.
The RAID controller also has been flashed to the latest available version of the BIOS for the SRCSASLS4I, version 1.40.342-1650.
The Windows drivers are the latest, version 126.96.36.199 even though is not an operating system issue!
The virtual drive arrays are managed using Intel RAID Web Console 2, also the latest available version, 12.05.03.00.
Whatever drive combination of drives is hot-plugged into the 8 slots it is recognized by the Web Console app and virtual disks can be built against them.
Today I had a combination of 4 SAS 1TB Seagate drives and 4 SATA 2TB hard drives hot-plugged in with the system up and running. The Web Console app recognized them just fine. The mix was of 2 SAS and 2 SATA on each expander.
Due to a system update the system had to restart and to my surprise got stuck on the RAID controller's boot screen.
The RAID controller's boot ROM stated that the drive limit per quad had been exceeded and that the configuration was unspported.
I removed two of the Western Digital 2TB RE4 SATA drives from one of the expanders and rebooted the system and the RAID controller's BIOS allowed the system to boot.
I have not been able to locate anything that describes this issue and I was wondering if anyone else had come across it.
I don't understand what exactly the problem is though. The RAID controller supports up to 16 physical drives according to its specifications.
So what is the issue here? Is it the SAS/SATA mix?
Any feedback on this would be greatly appreciated!