On Sat, 21 Oct 2006, 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?
> 
> 
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Read this:

http://www.anandtech.com/IT/showdoc.aspx?i=2859

I have a similar setup to you, 6 IDE ATA/100 + 2 SATA/150 (all 400GB) in 
an mdadm RAID5, works well but it maxes out the PCI bus unfortunately.  At 
some point I am going to do what you did, get 2 x SATA PCI-e SiL 3114 
cards perhaps.  Or, after reading that article, consider SAS maybe..?

Justin.
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