hard error--error #41--Memory compare error

[Rambo_1]

I have a DS20 ,I found it had crashed today.I used "init" under P00>>> to init the DS20,I saw some "hard error " when the DS20 test the memory ,and prompted as below:

hard error--error #41--Memory compare error
Diagnostic Name Id device Pass Test Hard/Soft 1-JAN-2066
memtest 00000054 brd0 1 1 1 0 12:00:01
Expected value: 116ec4
Received value: 0
Failing addr: 992e00
There are two 512MB mem in the DS20, Is really the memory failed or no?which Array I should replace ? 1 or 2 ,or both of them?
P00>>>sh mem

Array # Size Base Addr
------- ---------- ---------
1 512 MB 000000000
2 512 MB 020000000
P00>>>sh fru -e
* FRU Name E Part# Serial# Model#/MFG Alias#/YY-WW
fru_id a200ff00ff00ff a200ff00ff00ff
SMB0 0 54-24756-02 NI90870130 ?
fru_id a200ff00ff00ff a4000100ff00ff
fru_id a4000100ff00ff a4000100ff00ff
CPU0 0 54-24758-03 NI90460213 ?
The patch in this DS20 is
DUV40FAS0001-19990609 OSF440
Should I upgrade the patch ? which version patch I should upgrade? and this DS20 is a Truclu member .

[Rambo_1]

Another question.
P00>>>show fru , only displayed MotherBoard and CPU. Is it a normal status?,why it doesn't display another parts like FAN ,Power or Memory?
P00>>>sh fru
* FRU Name E Part# Serial# Model#/MFG Alias#/YY-WW
SMB0 0 54-24756-02 NI90870130 ?
CPU0 0 54-24758-03 NI90460213 ?

[Vladimir Fabecic · Accepted solution]

>>> clear_error all
>>> init
>>> memexer 3
Memexer diagnostic will take some time (sometimes few hours). After that you will see is it really hardware problem.

[Rambo_1]

I used "clear_error all" , but this command didn't work, can't clear the error ,"show fru -e " still can see that error .
Any suggestions for clearing those error ?

Thanks for your help

Rambo

[Steven Schweda]

> Any suggestions for clearing those error ?

Replace the defective memory?