Want to put up a 4-disk RAID5 array (not to boot off, just storage, boot drive will be from an SSD) into the 4x drive bays on the Mac Pro 5,1 and don't want to use the Apple RAID card that takes advantage of the internal drive channels as I herd bad things about it the apple card and its not too hot on specs either. So I am pondering whether to go for something like the: ARC-1880LP http://eshop.macsales.com/item/Areca/ARC1880LP/ With this card I'll have 4x 3TB drives in RAID5 and 2x SSD in 5"25 with Multi-mount adapter. Will probably have to use the two onboard SATA2 ports for the SSD's considering there's only one set SATA power/data connector set left that I can use that was intended for the ODD. Or is there more sata/power connectors there or can I buy/connect more? Or use something like the Areca ARC-1880-ix-12 that can be connected to some 12x internal drives via SAS expanders. With this card I can connect both the 4x 3TB HDD RAID5 volume and 2x 6G SSD (non-raid) to it at same time. Does anyone have any experience with any of the above cards? e.g ease of setting up, bugs, reliability etc. Also does it get messy cable wise when you don't use the apple raid card and run the SAS expanders to the drives? How did you go about flashing the card to EFI firmware ? Which other 6G RAID cards can you recommend that I can connect 4x HDD in RAID5 and 2x 6G SSD's (non-raid) to, if there's a good one that takes advantage of internal drive channels it would be a plus. Thanks..