raid 0 w/ volume write-back cache enabled on ich8r

Quote:
To enhance the write performance of RAID 5, Intel® Matrix Storage Manager software has implemented a RAID 5 volume write-back cache and coalescer. The volume write-back cache allows writes to be buffered and improves coalescing. The cache is disabled by default, but can be enabled by the user through the Intel® Matrix Storage Console. An Uninterrupted Power Supply (UPS) is recommended for use if the cache is enabled.


but how it performs on raid 0 array??

system configuration
hardware
intel c2d e6600
asus p5b deluxe wifi-ap
supertalent t667ub1gc 2x
winfast px8800 gts tdh 320mb
western digital caviar se sata2 8mb 80gb 2x (wd800aajs w/ ncq enabled)

software
windows xp pro sp2
latest current whql drivers for all hardware

benchmark results
http://img523.imageshack.us/img523/2341/raid0wd800aajshdtachwitvr9.th.jpg

http://img413.imageshack.us/img413/130/raid0hdtunewd800aajsef7.th.jpg

http://img165.imageshack.us/img165/6427/ideahciraidqb9.th.jpg

it seems that there's an improvement over the default setting. some reports stated that different vendor may produce different performance results with the volume write-back cache enabled. just make sure you have an uninterrupted power supply (UPS) in order to avoid the things we do not want when this feature enabled.

reference:
Intel® Matrix Storage Manager - What is RAID 5 (striping with parity)?
Tech-Hounds.com - SATA Hard Drives on J-Micron and Intel controllers
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More about raid volume write back cache enabled ich8r
  1. Download install Intel® Matrix Storage Manager, start application and switch Advanced Mode than, find your RAID name at the left on the page in the tree and right click & choose option of Enable Volume Write-Back Cache. Hope it helps. I have done it on ICH9R with my RAID0.
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