The fsutil behavior query only tells you that the OS is sending the TRIM command. Unfortunately if you are running raid the command does not get passed through the controller so TRIM will not be working. Intel are working on a driver update that will pass on the TRIM command but to date there is no ETA.
Current performance degradation can only therefore be recovered with a secure erase in a raid configuration. Performance degradation is related to the extent of writes that occur. If you are not constantly writing heavily to the drive you should not notice much degradation.
Edit: There is some good advice on "optimizations" here:
the link you have posted was my second reading for SSD.
they are also
and more like these on forums.guru~, zikmao.net and so one.
I don't claim "the Trim works on my Raid 0 config", I say only is enabled and sent to raid controller.
I don't claim I have archived the best optimization W7 in town / world.
I say / claim / ask / cry only:
Why [... put all knowing injuries here...] - the bench are the same
read: 325 +/- 4Mb, Acc. time 0,15-0,25
write: 202 +/- 3Mb, Acc. time 0,09-0,15
IS A CONTROLLER LIMITATION ?
several days I was copied DVD iso files or tib files ~ from 4-5Gb up to 150Gb; tested and deleted after
idem, for small files => PortableApps (copy / read / write delete)
the bench are the same like in the first day
except write perf. with write cache enabled (a plus of 20-30Mb)
Your sequential read speed and access times are below optimal, but I don't know if they are below optimal for your particular set up. I've seen read speeds around 500MB/s and access times ~ 0.09 on an ICH9 workstation.The sequential write speeds look OK. At a guess the read speeds are saturating your set up.
re-thanks redux (for survey & quick answer)
I was checked the bench for ICHR9, which are between 400-500Mb read & 200-250Mb write with less then 0.10 acc. time.
Why on mine is less? despite all the different setups ?
It's the "M" ? My controller is ICHR9-M (=mobile).
Before to put this query in forum, I was spent several hours in order to find the bench for ICHR9-M ... without luck
I hope to find someone (from Intel?) which know and has the amiability to share his knowledge with me.
In W7 is always 7.9 (max)