I've got a RS2WC080 connected to 8 4TB SATA III WD Black drives, on an Asus Z9PE-D8 motherboard. It's set up as RAID 5 with all the disks in a single volume.
The problems I'm having are twofold: first, it disconnects whenever the OS sleeps. Meaning that when it wakes up the virtual drive has unmounted and Windows can't find D: drive any more. This machine is being used as a workstation, and I'm not keen on having it running all the time without sleeping.
The second is that the write performance is really bad. Like 45Mb/s, when the read speed is in the mid 700s. I followed the performance guide here: Server Products — Configuring Intel® RAID Controllers for optimal performance or tried to, because a lot of the options - like setting write cache policy to 'Write Ahead' and read ahead policy to 'Adaptive Read Ahead' - don't seem to be possible, either in the RAID BIOS utility or in the Web Console.
Any pointers on what I might be doing wrong?
Other specs: 2 x Intel E5-2690 x 10 cores @ 3GHz, 64Gb RAM, Windows 7 64-bit.