[ale] call me stupid but.......

James P. Kinney III jkinney at localnetsolutions.com
Wed Jul 3 11:40:09 EDT 2002


After reading that, I will be encasing my production boxes with lead
bricks. 

On Wed, 2002-07-03 at 09:19, Charles Shapiro wrote:
> Ooh, now this is real interesting. I thought that the real cause of soft
> errors in memory was trace radioactivity in the chip carriers and
> surroundings, but the latest research shows I was wrong. Here's a fun
> link which gives some data indicating that soft RAM errors are indeed
> caused by cosmic rays.
> 
> http://www.crystallineconcepts.com/ram/ram-soft.html
> 
> -- CHS
> 
> On Tue, 2002-07-02 at 21:14, Jeff Hubbs wrote:
> > This is especially useful for really-high-RAM systems (>1GB) because the
> > number of bits being stored becomes significant compared to the
> > estimated probability of a spontaneous bit-flip (cosmic-ray-induced)
> > over the operational life of the machine.
> > 
> > - Jeff 
> > 
> > On Tue, 2002-07-02 at 02:50, Jordi S. Bunster wrote:
> > > 7/2/02 2:30:40 AM, Stephen Turner <artic_knight at yahoo.com> wrote:
> > > 
> > > >whats ecc ram? ive been looking at ddr, i think what i got is 2100
> > > >(266mhz) but whats this ecc ddr ram? whats ecc? and where do i find out
> > > >about such terms that i might not know of just yet?
> > > 
> > > ECC stands for Error Checking Code, As far as I can remember. It can detect almost any single bit 
> > > error per page in your data, and some two bit ones, and correct it at the hardware level, before 
> > > the OS (or microprocessor, for that matter) even touches the data.
> > > 
> > > Most serious UNIX servers ship with ECC RAM. It may be more expensive, but it really gives you 
> > > and extra bit of reliability depending on your needs. Some architectures (anyone, please correct 
> > > me on these, potentially wrong statement) only allow ECC RAM, like the workstations from Sun, for 
> > > example.
> > > 
> > > If you're interested in buying it, avoid "ECC compatible" memory. As Eric says, this is the 
> > > marketing term for "We're too cheap to implement ECC". :)
> > > 
> > >  -- Jordi
> > > 
> > > 
> > > 
> > > 
> > > ---
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> > > 
> > 
> > 
> > 
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> 
> 
> ---
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-- 
James P. Kinney III   \Changing the mobile computing world/
President and CEO      \          one Linux user         /
Local Net Solutions,LLC \           at a time.          /
770-493-8244             \.___________________________./

GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics)
<jkinney at localnetsolutions.com>
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