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To ECC or to not ECC, that is the...


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Posted

Afternoon Neowinians!

I am looking at upgrading my home server with some new bits and bobs - basically new mobo, cpu, and RAM.

I was going to go with an Intel i3 2120T/2120 (because I have a quiet case, and it gets quite hot - so cooler is nice) and an ASRock mobo with your run of the mill RAM. I also only wanted to spend a few hundred, this server is really simple (basically a file server, and a minecraft server).

Thats where the problems started. I was always under the impression ECC RAM was only supported on the higher end hardware...however apparently the AMD FX and AM3+ products support it! While I know intel offers better power/performance/cost ratios, I don't mind sacrificing a little performance and gaining a little heat if ECC is brilliant.

Firstly, is ECC worth it? I mean I rarely see my home computer go for more than a few months without resetting, however our server at work goes for a good year before i reset it out of pitty.

If ECC is worth it, can someone suggest an affordable cpu/mobo/ram combo (i'm in australia, west coast)?

I am planning on running WHS 2011 (as it is cheaper than Win7 Pro! >.<)

Thanks for any help you can give! =)

Regards,

UL

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Posted

Unless you're running mission-critical software, no not really.

RAM errors and malfunctions are pretty rare these days.

ECC actually reduces performance, it increases the CL latency but improves reliability in being able to withstand some memory errors.

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Posted

Is it worth the price premium, when just "0.22% of DIMMs suffer an ECC-correctable error every year" : source

ECC really is only needed in the most important of applications - is what you need THAT important?

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Posted

Haha thanks guys! That is exactly what I was after! Hard numbers, with a source, is brilliant.

For the sake of a 0.22% chance per YEAR...I don't think ill bother with ECC =P if it was per month...maybe, but not per year!

(I'm impressed you managed to dig up that paper so quickly bio...i was searching for a good few hours =P)

Thanks for the help! =)

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Posted

Is it worth the price premium, when just "0.22% of DIMMs suffer an ECC-correctable error every year" : source

ECC really is only needed in the most important of applications - is what you need THAT important?

I don't think you read it properly:

About a third of machines and over 8% of DIMMs in

our fleet saw at least one correctable error per year. Our

per-DIMM rates of correctable errors translate to an aver-

age of 25,000

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Posted

For a real business server? Not using ECC is silly.

For your home server? Using ECC is probably a waste of money.

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Posted

For a real business server? Not using ECC is silly.

For your home server? Using ECC is probably a waste of money.

For an enterprise (read - multiple-XEON/multiple-Opteron rack server), ECC makes sense.

For a server smaller than that (even single-XEON/single-Opteron rack), ECC is pretty darn pointless, because the failure rate (even using standard desktop non-ECC) won't be higher than the worst-case expense in such a scenario, as ECC is priced higher by a factor of greater than three (it's currently closer to five) than desktop RAM of the same speed. (It's still ROI FTW - even when it comes to servers.)

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Posted

I agree with vmstan, for the extra cost, ECC only generally makes sense in a production environment.

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