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

[chrone]

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






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

 

[Guest]

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.