2 x RAID 0 on Intel controller ?

KINGCHAD30

KINGCHAD30

KINGCHAD30

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4 Jul 2011
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Edinburgh
Hello,

I have a dilemma i can't seem to find the answer to and would appreciate some help? (thanks in advance) ..

I have the Asus P8Z68-V PRO with 2x Agility 3's in Raid 0 SSD(boot drive) on the intel SATA3 6Gbp/s controller and 2xWDcaviar blacks HDD in RAID 0 (Storage) on the intel SATA2 3.Gbp/s controller..

I set up RAID 0 for SSD's and HDD's using the normal ctrl + i sequence ..

So technincally i have 2 x RAID 0 Arrays on one intel controller .. my question is DOES HAVING 2 RAID 0 ARRAYS AFFECT MY SSD PERFORMANCE? because at the mo i'm only getting 352MB/s read and 120MB/s Write and have enabled acceleration via IRST ect ..

cant seem to get my agilitys up to speed?

any help much appreciated thanks..
 
Also make sure write caching is enabled in Device Manager...

What SSD/HDD benching program are you using to bench your SSD's?

Download, run and upload an ATTO bench of the SSD's...
 
Yeah write back cahing is selected .. using Crystal disk mark . . will give ATTO a try

thanks for your reply i'm just baffled by this situation
 
KINGCHAD30 said:
have enabled acceleration via IRST ect ..
Click to expand...

When I had SSD acceleration of a mechanical drive, my SSD access times were substantially worse than if I had the SSD just used as my windows drive and not doing acceleration. (300mbs vs 450mbs sort of difference) - It was still substantially quicker than the mechanical drive though, so just looks to be one of those compromises. This also affected the other partition I had on the SSD (the one not being used for acceleration).

I would assume any read of the mechanical drive (when accelerated) first has a look on the SSD at a table (contents page?) saying "Is this on the stuff on the SSD or on drive?" then it has to go get that data off the SSD or off the mechanical drive - so at least 2 read operations - this probably accounts for the slowdown compared to vanilla SSD usage.

Oh and don't bother to benchmark mechanical drives while using SSD acceleration - all you're doing is filling up the SSD cache with benchmarking data :)
 
can i ask @ Jboggs

..

are you referirng to SSD caching?

i have no need to run a mechanical bench at all .. i have windows on
C: drive (2x ssd in Raid 0 with accelration enabled)

D: (2 x7200 rpm sata drives in seperate raid 0 ) acceleration disabled

thanks for your reply but not too sure you understood the question?

could be wrong lol
 
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