> > There's the possibility of external RAID devices that will undo all that
> > work for you by doing buffering and ACK's by themselves, then turning
> > around to talk to disks with data in cache.
>
> Not on ANY decent storage systems.
Network Appliance filers (which are, to my mind, the ultimate external
RAID device 8^) do this, but of course they store such transactions
in NVRAM. LLike Stephen said, the OS can assume that the disk will do
the right thing, because disks do do the right thing in this regard.
He knows of which he speaks.
-- Todd Graham Lewis 32°49'N,83°36'W (800) 719-4664, x2804 ******Linux****** MindSpring Enterprises tlewis@mindspring.net"Those who write the code make the rules." -- Jamie Zawinski
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