Re: Two Megabytes of Core Memory in 1965

From: CBFalconer (cbfalconer_at_yahoo.com)
Date: 05/29/04 

Date: Sat, 29 May 2004 15:15:18 GMT

Guy Macon wrote:
> CBFalconer says...
>> Guy Macon <http://www.guymacon.com> wrote:
>>> rickman says...
>>>> Guy Macon <http://www.guymacon.com> wrote:
>>>>>
>>>>> I am typing this on a Comopaq Proliant 5500R server that I got
>>>>> on eBay. Corrects all 1-bit errors, detects all 2-bit errors.
>>>>> Has 4 200Mhz Pentium Pro uPs with 1MB of cache on each one (I
>>>>> will upgrade to 500Mhz Pentium III Xeons when the price drops)
>>>>> 3GB of ECC RAM, and a twelve disk SCSI raid array with hotswap
>>>>> drives. All for under $500.
>>>>
>>>> I am curious, how many 1 bit or 2 bit errors has the system
>>>> reported?
>>>
>>> None, in two years of 24/7 use and two full weeks of running
>>> memory diagnostics. With older Compaq servers, if you can
>>> measure the error rate it is much too high.
>>
>> I assume that is running under Linux or your own software.
>
> I quadruple boot to=FreeDOS, QNX, Slackware linux, and Windows 2000.
>
>> AIUI there is no provision in Windoze for recording memory
>> failures and/or corrections.
>
> This is true of desktop systems, but Proliant servers are a another
> story. A desktop PC has a minimal BIOS that just gets the hardware
> into a state where the OS can boot. A fully equiped Proliant server
> has another CPU with embedded software that does such wonderful
> things as detecting that Windows has crashed and resetting the
> system, switching over to another server if there is a hardware
> failure, etc. In addition Compaq provides a ProLiant System
> Management Driver for Windows that adds the following capabilities
> to Windows:
>
> Logging of real-time clock battery errors.
> Logging of processor errors.
> Fan outage and temperature detect alarms.
> Logging of power module errors.
> Logging of corrected memory errors.

Nice. Would you like to make a quick $10 profit on that box? :-)
Am I correct that there is no real reason for this Windoze failing
in general; i.e. it simply needs to enable the appropriate HW
interrupt and service it accordingly? 

-- 
Chuck F (cbfalconer@yahoo.com) (cbfalconer@worldnet.att.net)
   Available for consulting/temporary embedded and systems.
   <http://cbfalconer.home.att.net>  USE worldnet address!

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