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Memory not being sensed

AVV
Super Advisor

Memory not being sensed

Hi All,

I have two rp7420 server with once cell on each and having 12GBs of RAM (12 * 1024). We tried to upgrade it to 20GB by adding 4 more 2GB modules on both. It sensed only 16Gb even after trying different modes of RAM filling in cell. I am giving you the output of each server as below. Could you please suggest on this.

On serverA
==========

Memory Board Inventory

CAB/CELL: 0/1

DIMM A DIMM B
Slot Size (MB) Size (MB)
---- --------- ---------
0 2048 2048
1 1024 1024
2 1024 1024
3 1024 1024
4 1024 1024
5 1024 1024
6 1024 1024
7 0 0 ========>>> This slots of RAM is not sensed.

Cell Total (MB): 16384
-------------------------------------------------

System Total (MB): 16384




----------------------------------------------------------------------------------------------

On serverB
----------
CAB/CELL: 0/1

DIMM A DIMM B
Slot Size (MB) Size (MB)
---- --------- ---------
0 0 0 ================>>> RAM in this slots are not detected.
1 2048 2048
2 1024 1024
3 1024 1024
4 1024 1024
5 1024 1024
6 1024 1024
7 1024 1024

Cell Total (MB): 16384
-------------------------------------------------

System Total (MB): 16384

7 REPLIES
Rita C Workman
Honored Contributor

Re: Memory not being sensed

Here is a thread to the manual on how to install the dimms properly. Start reading about page 22...

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01879480/c01879480.pdf

Regards,
Rita
Torsten.
Acclaimed Contributor

Re: Memory not being sensed

Can you tell what the product# of the DIMMs is and what firmware is running?


MP:CM> sysrev

Hope this helps!
Regards
Torsten.

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AVV
Super Advisor

Re: Memory not being sensed

[serverA] MP:CM> sysrev

Cabinet firmware revision report

PROGRAMMABLE HARDWARE :

System Backplane : GPM FM OSP
------- ------- -------
1.002 1.002 1.002

PCI-X Backplane : LPM HS
------- -------
2.000 1.000

Core IO : Master Slave
-------- -------
2.008 0.000

LPM PDHC
------- -------
Cell 0 : 0.000 0.000 - not installed
Cell 1 : 1.002 1.007


FIRMWARE:

Core IO
Master : A.005.021
Slave : A.000.000 - not installed

Cell 0 - not installed
PDHC : A.000.000
Pri SFW : 0.000
Sec SFW : 0.000

Cell 1
PDHC : A.003.014
Pri SFW : 21.003 (PA)
Sec SFW : 1.009 (IA)

-------------------------------------------------

[ServerB] MP:CM> sysrev

Cabinet firmware revision report

PROGRAMMABLE HARDWARE :

System Backplane : GPM FM OSP
------- ------- -------
1.002 1.002 1.002

PCI-X Backplane : LPM HS
------- -------
2.000 1.000

Core IO : Master Slave
-------- -------
2.008 0.000

LPM PDHC
------- -------
Cell 0 : 0.000 0.000 - not installed
Cell 1 : 1.002 1.006


FIRMWARE:

Core IO
Master : A.005.017
Slave : A.000.000 - not installed

Cell 0 - not installed
PDHC : A.000.000
Pri SFW : 0.000
Sec SFW : 0.000

Cell 1
PDHC : A.003.012
Pri SFW : 20.008 (PA)
Sec SFW : 0.018 (IA)
Torsten.
Acclaimed Contributor

Re: Memory not being sensed

How about the product# of the memory ?

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
AVV
Super Advisor

Re: Memory not being sensed

Hi Torsten,


That is original HP memory.
AVV
Super Advisor

Re: Memory not being sensed

Hi Torsten/All,

Anyone have any idea on this ?
Andrew Rutter
Honored Contributor

Re: Memory not being sensed

hi,

it may be 'HP' memory but what is the part number on the dimms? is it the right memory for the system?

do you get any warnings at pdc about memory been deconfigured? or mismatched?

it only takes one dimm out of a pair to disable the bank.

the memory kits are quads as well, 4 dimms to one kit. so server A is configured wrongly to work anyway.

On each cell board, Memory Quads must be installed in the following order:
1st (0A, 0B, 1A, 1B), 2nd (2A, 2B, 3A, 3B), 3rd (4A, 4B, 5A, 5B), 4th (6A, 6B, 7A, 7B)


from
http://h18000.www1.hp.com/products/quickspecs/11895_div/11895_div.HTML

Andy