Windows 8 - TRIM optimisations with AHCI & RAID
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09-24-2011 01:44 AM
Windows 8 detects SSD's and TRIMS instead of defraging.
It also looks like it can TRIM a RAID 0 array. I didn't think that was possible, but it certainly looks like it from the screen shot I took below.
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09-25-2011 09:27 AM
btw redux since u already have it in raid 0 did you notice any significant improvement in your setup?
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09-25-2011 09:42 AM
No. With both Win 7 & Win 8 I see no real world advantage in using RAID 0. I prefer to have one SSD for boot and another for static data so I don't have a HDD slowing up my system.
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09-27-2011 12:46 PM
Sadly whilst Win 8 appeared to be TRIMing the raid array it was in fact doing nothing. (Verified by hIOmon). TRIM in AHCI mode works fine.
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09-29-2011 07:55 AM
The driver must take the TRIM call and know how to pass it to and only to the appropiate pages. This is the issue for TRIM support on arrays.
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