I did check for chipset drivers and I think I did something along that route.. If I did it, it is noted earlier in the thread, I tried to be as meticulous as possible in troubleshooting this problem, but I know I didn't do everything perfect.
How bad is it of me to be considering re-attempting with 8.1 on the same hardware
Hi,
I've been hving this problem in one of of servers. Server 2012, so it fits this "Windows 8 bug" theory.
Beeing an old entry level server, it makes use of intel's onboard ICH7 controller. It is set up as AHCI, and recently I noticed that any relevent file access would bring the server to a desperating crawl.
Symptoms: I want to copy some 30 large files, total amount around 500GB. Copying between two pysicals drives, 3 TB WD "RED Nas" series. Decent drivers, I presume.
When file copy starts, I get the expected performance (around 120MB/sec and ~20% cpu usage), then after a few seconds havoc wreaks: performance drops to 9 or 10 MB/s, CPU at around 100%, and all in all an unusable server while the file copy is running.
This is a Quad Core Xeon at 2.4Ghz (Core 2 generation), mind you! 100% cpu usage during a simple file copy between two fast local hard drives is unacceptable, IMO.
Then I noticed that anytime I paused the copy, when resuming, I'd get yet again decent performance for some 10 secs, and then hell brakes loose again.
Based on this weird sympton, I thought "what if I removed Windows Explorer out of the equation".
So I tried using xcopy, copy and move from CMD. CPU usage is a bit lower (~70%), while transfer speed hovers around 40MB/s (as per Resource Monitor).
So while xcopy is not as fast (it only uses one CPU thread, for starters, maybe there's something more to it that keeps file copying well under the theoretical maximum speed), it is much more coherent.
I've tried both AHCI and compatible mode in BIOS settings, no distuinguishable difference whatsoever.
I've just ordered an used 3ware 9650SE controller (30£ off eBay), so I'll be able to tell you whether using a true HW controller makes for a more reliable hdd usage. Right now, I'm guessing that either driver or OS related issues keep this old ICH7 chipset from achieving acceptable speeds on this recent OS.