On 01/10/2019 21:17, Lyndon Nerenberg wrote:
>> SYS-5018A-FTN4
>
> If you have any of these, replace them. They have known buggy CPUs
> and will randomly fail without warning. We replaced about a dozen
> of them after >50% failed within the first year of installation.
I have several of these boards that need RMA'ing. Fingers are crossed,
and holding thumbs, that this gets a positive result.
> Note this isn't an OpenBSD problem -- the 5018As are just bad hardware.
> (They also have APIC interrupt issues, most likely due to a buggy ACPI
> implementation.)
I know a lot about the above bricking issue ("Erratum AVR.54") but I
never heard anything about an ACPI problem. Do you have a link to
further information please?
I also have several servers that were produced *after* the SoC was fixed
(C0 stepping instead of B0). I don't know if any ACPI fixes were
implemented though. It would be good to get some kind of understanding
on this.
> We replaced all our SYS-5018A-FTN4s with SYS-5018D-FN8Ts.
Did the slightly more powerful cores (and potential for much more RAM,
plus other various improvements) in the replacement server compensate
sufficiently for the number of cores being halved?
Andrew
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