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Extreme low HDD write performance when enable RST with SSD Cache on Q87

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Hi,

 

HP EliteDesk 800 G1 desktop PC with Q87 Chipset. OROM version 12.5.0.1815 in RAID Mode. OS running Windows 7 64 Bit. RST Driver Version 13.2.4.1000

 

With SATA3 HDD ONLY, HDD Sequence read/write : 78/69 MB/s which is normal.

With 30GB Sandisk U100 SSD plus same HDD and Acceleration Mode: Enhanced. HDD Sequence read/write : 184/17 MB/s. The Write speed is more than 4 time slower than without SSD Cache.

 

So, What's I doing wrong here? Thanks in advance.


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