Zero Channel Raid?

[Jeff Ross]

Hi,

I'm due to take delivery tomorrow of a new-to-me SuperMicro 2U server with the 
X5DPA-8GG motherboard.  Onboard is an Adaptec AIC-7902 U320 SCSI controller 
but it also has a ZCR slot.  I'd intended to just use the disks as sd0 - sd5, 
but now I also see on the fleabay that I can get an LSI MegaRAID  SCSI 320-0X 
card for $40.

Is there a huge downside to the ZCR card?  Docs say that it adds RAID to the 
 motherboard based SCSI, and that card is listed under the ami group. 
However, the LSI docs also say it adds RAID to  "a system motherboard that has 
the LSI Logic 53C1020 or 53C1030 SCSI chip." and I see no mention of those 
chips in the SuperMicro motherboard manual.

Anybody know if this will work?  Even if it does work, is the ZCR raid worth 
having?  Based on my previous experience with MegaRAID cards, I know I'll need 
a BBU to get any performance at all so the card isn't really $40 but it is 
still within budget.

Thanks as always,

Jeff