Justin Piszcz wrote:
Quick question,
On older systems, regular PCI motherboards, no PCI-e-- which is faster?
1) One 4 port SATA150 card in 1 PCI slot which has 4 drives connected.
2) Four SATA150 cards in 4 PCI slots, which each have 1 drive connected?
I'd assume 2 would stress the PCI bus more and thus would be slower, but I
am curious what other people know/think/etc?
You are sending the same amount of data over the bus in either case,
assuming you are using s/w RAID. This is where (real) hardware RAID has
an advantage in performance, the parity doesn't go over the bus. If you
have a server board it may have multiple PCI busses, and therefore a
higher max bandwidth with multiple cards. I would still expect PCI-e to
be faster.
--
bill davidsen <davidsen@xxxxxxx>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
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