On 01/23/2011 03:44 AM, Andre Tomt wrote:
Since we're talking about "non hardware raid" usage, I don't really understand how it would be harder to manage mixed controllers? Care to explain?
Well, yeah, probably I have exxagerated. If you need to replace a drive you have to associate the drive letter to the hardware slot, and if you have two controllers you have to remember two mappings. Also you have to know the idiosincracies of 2 controllers, like, do they support hot swap or they freeze? Do the support smartmontools well or not, are both capable of withstanding high IOPS situation or one drops out and degrades the array... but probably the OP can accept these drawbacks.
I can't quite get the performance statement to compute, either.. Its not like the same I/O goes out to all controllers. If your other controller is slower, just put fewer drives on it. Balance it out.
I was thinking more to the round trip time, which will be different for the 2 controllers, and supposing the OP is creating an array spanning both controllers.
Anyways, If you settle for SATA and a desktop motherboard, most mid to high end s1156/1155 motherboards nowadays are fitted with 6 to 8 SATA ports. They're in now way hard to come by - even 8 ports seems to be available at $130 (I spent 10 seconds looking on newegg).
I think other mainboards can cost down to $50, but I haven't checked recently
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