Dan wrote:
I have been using an older 64bit system, socket 754 for a while now. It has
the old PCI bus 33Mhz. I have two low cost (no HW RAID) PCI SATA I cards
each with 4 ports to give me an eight disk RAID 6. I also have a Gig NIC,
on the PCI bus. I have Gig switches with clients connecting to it at Gig
speed.
As many know you get a peak transfer rate of 133 MB/s or 1064Mb/s from that
PCI bus http://en.wikipedia.org/wiki/Peripheral_Component_Interconnect
The transfer rate is not bad across the network but my bottle neck it the
PCI bus. I have been shopping around for new MB and PCI-express cards. I
have been using mdadm for a long time and would like to stay with it. I am
having trouble finding an eight port PCI-express card that does not have all
the fancy HW RAID which jacks up the cost. I am now considering using a MB
with eight SATA II slots onboard. GIGABYTE GA-M59SLI-S5 Socket AM2 NVIDIA
nForce 590 SLI MCP ATX.
What are other users of mdadm using with the PCI-express cards, most cost
effective solution?
There may still be m/b available with multiple PCI busses. Don't know if
you are interested in a low budget solution, but that would address
bandwidth and use existing hardware.
Idle curiousity: what kind of case are you using for the drives? I will
need to spec a machine with eight drives in the December-January timeframe.
--
bill davidsen <davidsen@xxxxxxx>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
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