My 7200RPM drive only produces a WEI of 5.9. I have read that even the 10,000 RPM drives with 64MB of cache do not fair any better. Is there a way to utilize RAID with several 7200RPM drives and witness faster access times?
(P.S. Don't bother me about SSD's. I know they are fast but I don't trust them yet, so save your breath.)
The best you could do with the 10K HDDs is to raid0 them and then short stroke them (only use about 20 % of the HD drive space leaving the remainder unused). This will decrease access time, but still nowhere near an SSD. Short stroking a pair of WD 320 blacks cut access time from 12.6 to approx 9.5 Will it increase WEI - not sure, but performance increase will be notable compared to other HDDs.
Have the WD sata 6 1 TB drive, on sata 6 controller - BAA-HUM bug. Personally I'd skip the Hybred drives, you may, or may NOT benifit from them seems alot depends on usage.
There are still a few reports knocking around the net that if correctly configured, a good RAID controller and a couple of high end recent drives such as Barracuda 7200.12s or Caviar blacks (I'll also suggest F3s could possible do it for malmental) can hit a WEI of 6-6.5.
"... I made note of the fact that our new levels, 6 and 7, were added to recognize the improved experiences one might have with newer hardware, particularly SSDs, graphics adapters, and multi-core processors. With respect to SSDs, the focus of the newer tests is on random I/O rates and their avoidance of the long latency issues noted above. As a note, the tests don’t specifically check to see if the underlying storage device is an SSD or not. We run them no matter the device type and any device capable of sustaining very high random I/O rates will score well."
Michael Fortin - Engineering the Windows 7 "Windows Experience Index" http://blogs.msdn.com/b/e7/archive/2009/01/19/engineeri...
I found a few quotes of people saying they got gigher than 5.9 with mechanical drives but I can't prove the legitamacy.
The best you could do with the 10K HDDs is to raid0 them and then short stroke them (only use about 20 % of the HD drive space leaving the remainder unused). This will decrease access time, but still nowhere near an SSD.
...and the thing to remember is that short-stroking the drive does nothing to reduce the rotational delay. Even if all the data was on a single cylinder and the heads never moved at all you'd still have to wait for an average of 1/2 of the platter rotation time.