August 3, 201510 yr What does everyone think about this card? http://www.sybausa.com/productInfo.php?iid=1620 It's selling on Amazon right now for $199.99, but I've also see it $20 to $30 more on other sites. If you had 16 drives attached to this card, the PCI Express X4 would be a bottleneck with parity checks wouldn't it?
August 3, 201510 yr I get limited to around 70/75 Mb/s with a SASLP PCIE 1.0 4x, if you don't have other bottlenecks it should be similar, twice the bandwidth but twice the drives, if it works with unraid wich I don't know.
August 3, 201510 yr Look at the Areca cards. ARC-1260 / ARC-1261. I think the 1260 can be had for $99 on eBay.
August 4, 201510 yr ... If you had 16 drives attached to this card, the PCI Express X4 would be a bottleneck with parity checks wouldn't it? It's a PCIe v2.0 card, so you'd get 500MB/s/lane ... or 2000MB/s. So yes, if you had 16 drives attached, this would be a bottleneck with modern drives during parity check or drive rebuilds while the drives were on the outer cylinders. But in normal operation it's unlikely there'd be any throttling, as you're not likely to be using anywhere near all of the drives at once. Note that the Areca card Brian suggested in a PCIe x8 card ... but it's not a v2.0 card, so the total bandwidth is the same [twice as many lanes, but half the bandwidth/lane] Either card would work well, however, as long as you're not concerned about the minor impact it would have on parity checks and drive rebuilds.
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