[mythtv-users] AM2+ motherboard with support for ECC RAM for media player / server
spam at homeurl.co.uk
Thu May 8 02:34:22 UTC 2008
Roger Heflin wrote:
> Bob wrote:
>> Bill Williamson wrote:
>>> On Wed, May 7, 2008 at 4:23 PM, Bob <spam at homeurl.co.uk
>>> <mailto:spam at homeurl.co.uk>> wrote:
>>> Bob wrote:
>>> > Unbuffered / Registered obviously.
>>> Bad form Bla Bla Bla but just to update the list, the abit A-S78H also
>>> supports Un-buffered ECC RAM, it doesn't have FireWire though
>>> Why do you think that ECC vs non ECC ram will have any bearing on
>>> stability of a media computer ? If you're going ECC, why would you
>>> not also go SCSI?
>>> I don't disagree with wanting stability, but the reality is that ECC
>>> likely will not give you any.
>> ECC RAM corrects bit errors in memory which could cause a crash or other
>> problems, these errors while rare are estimated to occur once a month
>> per GB of RAM, I'm planing have 2 or 4 GBs and I'll leave the system up
>> all the time, which is why reliability and low power consumption are a must.
> Actually the errors don't happen that often anymore, not sure exactly why, but I
> have monitored huge amounts of ram (10000+ GB for months) and the errors happen
> pretty rarely except on machines getting huge numbers of errors, in a given
> month with a machine with 32GB on it very few of the machines get any errors at
> all, the few that get errors don't usually get only 1 error.
That's interesting to have some real world figures, thank you.
> But, if you are monitoring ECC then this will give you a chance to know about
> the memory *BEFORE* it causes you machine to be unstable and crash randomly
> without you knowing why it is crashing. It would also speed up correcting the
> issue as you don't have to guess what the actual issue is.
What do you use to monitor the errors?
> It is really one of the advantages of the AMD cpus, as you can easily get ECC in
> them without buying a single socket server grade MB for a lot more money that
> you have to get with the Intel cpus.
This is exactly the reason I'm after an AM2+ MotherBoard that supports
it, I like these 2 boards  but I've had bad experiences with both
abit  and asus  in the past in both cases not actually their fault
but once bitten.. the only downside is the lack of FireWire which as Ron
on debian-users points out that can be fixed with a PCI card, the only
problem with that is these mATX are quite short on space and I'll
probably put a DVB-C card in.
>> I don't want to build a "proper" server with ECC Registered RAM and SCSI
>> because it'll cost a fair bit more for a fairly marginal improvement in
>> stability and longevity.
> SCSI does not matter anymore, in the last 3 years the SATA/IDE disk have got a
> lot better, I think the issue is that the disk manufacturers figured out better
> platter quality control. I have experience with large samples of SCSI
> (2003-800 scsi disks) and SATA disks (2000+ IDE/SATA disks), and they both have
> similar failures rates, if you go back to large numbers of IDE/SCSI disks in the
> 2000-2004 range this was not the case and the SATA disks were utter crap were
> you could expect 10-20% failures in the first 6 months, and the SCSI/FC disks
> had very low failure rates.
 abit BP6 motherboard dual skt 370 celeron board, that took ECC RAM,
great home SMP board with a clear upgrade path, only intel moved some
stuff around on the P!!! and shafted them / us
 some ASUS Slot A board with a crappy VIA chipset,  I won't touch
VIA again  and shouldn't really hold it against ASUS but I sort of have
 and then ALI came along to show us all that VIA wasn't that bad
 although if they genuinely open up their graphics drivers and the
new 64bit CPU is as OK as it's touted to be, I may well use them for low
power desktops or media players, and embedded servers if they put ECC
support in their RAM controllers
 the abit A-S78H & ASUS M3A78-EMH HDMI for those that missed the OPs
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