Yes, consider a Raid Motherboard BUT make sure that the motherboard that you choose can use the Raid connecters as "normal" ATA connectors without running in Raid.
Such a board is the Gigabyte GA7 NNXP which has two "normal" IDE ATA connecters allowing four devices and also two Raid connectoers allowing four more. What is more Raid can be turned off in the bios and these two run as "normal" ATA.
Further, it has Serial ATA so you could use sSATA for you hard disks and then the IDE for your optical drives allowing upto ten devices altogether.
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