Re: Is ECC memory any use?
- From: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
- Date: Sat, 8 Dec 2007 01:42:29 +0000
On Sat, 08 Dec 2007 01:07:35 +0000
Timothy Murphy <tim@xxxxxxxxxxxxxxxxxxxxxx> wrote:
I'm getting memory for a very old (P2B-LS) Asus motherboard,
and I see I can get ECC memory for some 20% more.
Is there any point in getting this?
It depends what for. ECC memory will self correct errors (the ECC
framework in the kernel just deals with nice user space reporting of this
and ECC unrecoverable errors).
If you are doing complex scientific processing or banking where an error
isn't acceptable then its essential. If you can tolerate the small change
of a bit flip ever year or two then its far less of a concern.
It also depends on the amount of RAM - more ram = more change of flips.
Disk errors should be different - the odds of an undetected disk error
are minute. The odds of catastrophic failure obviously are rather more
clear.
Alan
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