disk vs volume caching

[ringram]

I have 2 x 2Tb 7200 Caviar Black disks. With DISK caching enabled on each volume I get excellent performance, deferred writes work nicely and are writen to disk during the shutdown process.
I use this as a Hyper-V machine.

I decided to try the volume cache software instead with version 8 on the basis that instead of having to enable a cache on each disk, I just enable it for the volume. However performace was woeful. I ended up disabling it and running 0.8 at the disk level again. Performance returned.

I selected the same options except block size. The system is an ASUS KGPE-DX16 with dual 8 core AMD processors and 64Gb ram. So CPU load should not be an issue.

Anyway I have gone back to disk caching and all is working well.

[minhgi]

Nice system.

One question? Would you run fancycache or raid controller caching system, such LSI Cachecade 2.0, on your system. Just wondering on people choice.

[ringram]

Ok turns out I had to log some dmp files because it was rebuilding the array at the time and blue screened.
Probably explained the bad performance too!

I would run a hardware cache controller, except I was building to a budget.
If you can call my kgpe-dx16 asus mb budget..