Is it recommended to enable volume cacheing for a RAID 1 volume with hard disk caches already enabled? This is in the context of Intel ICH 8/9/10 Sata RAID and SBS2008 with UPS backup.
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I'm not that knowledgeable about RAID, but I think enabling the volume cache when HD cache already is would slow things down, since the PC has to read/write to both?
For raid 1 I would leave it off. The point of it is speed at the cost of some data integrity. Your battery backup should help avoid that. With raid 1 there is some benefit, but the raid 0 and 5 see the most gains.