Actually you are both are right and wrong.  The XRaid uses FibreChannel to communicate to the host machine(s).  The Raid controller is a FibreChannel controller.  After that there is a FibreChannel to UltraATA conversion for each drive, separate ATA bus for each drive.

What I am curious about is if this setup gets around ATA fsync problems, where the drive reports the write before it is actually performed.

Josh Berkus wrote:

the XServe/XRaid comes with FibreChannel

I stand corrected.   That should help things some; it makes it more of a small 
tradeoff between performance and storage size for the drives.


Kevin Barnard
Speed Fulfillment and Call Center

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