I've got a rather frustrating problem since I upgraded to WD Purple 4TB drives and also upgraded from Win 7. Previously I had 4xSeagate 1TB drives in RAID 10 + OCZ SSD Cache enabled. I upgraded because I needed more space to 2xWD Purple 4TB WD40PURX drives + the same OCZ SSD Cache drive. When copying data from 1 partition to another on the RAID array, I am getting 10MB/s write speed max and massive response times.. If I run IOMeter I get huge read and write speeds (300MB/s each with 80,000 IOPS) so I know that the Cache is working. I am not sure why real world transfers are stupidly slow for? I never used to have these issues previously with Windows 7. I downloaded the latest Rapid Storage drivers today too.
Motherboard: Asus P8Z77-V LK with latest BIOS
Intel Core I7 3770, 16GB Ram
Windows 10 64 bit.
Thank you for joining the Intel communities.
You can try a firmware update for the SSD.
Have you try changing the SATA cables?
Do you have the latest chipset driver install in your system?
You can download the latest chipset driver and the latest drivers for your system at:
NOTE: This link is being offered for your convenience and should not be viewed as an endorsement by Intel of the content, products, or services offered there.
Thanks and regards!