/PAE /3G problem

[Guest FabioG]

Hi,

We have a serious problem on our production cluster.

It's a MSCS cluster with 16GB RAM for each node and Windows 2003 EE

Server R2 sp2 32 bit installed on 64bit processors.

In the file boot.ini the parameter /PAE is set.

We're trying to set the /3GB flag as well but after rebooting a node ,

but we have experienced serious instability at the OS level. Windows

is not responding anymore relating

to OS basic processes that fail to start, network interfaces not

recognized anymore and other weird stuff concerning domain policies

and user environment. So we took the /3GB off the boot.ini.

Is the /3GB usable together with the /PAE parameter in such an

architecture? We thought it were, as we can see from some SAP notes

and Microsoft documents.

We also have opened a message at SAP and they confirmed this

possibility.

Moreover, starting an SAP application server and a MSSQL 2005 sp1

server on a node, we notice that from the Windows Task Manager the RAM

consumption reaches around 3

GB and afterward all the memory request goes largely into using the

paging file.

We also tried to set the windows page file to 0 (zero) (NO PAGE FILE)

but starting the database and/or the SAP application what we could see

was that in the task manager the physical memory consumption was very

low and the page file usage very high.

It seems the servers cannot address all the 16GB recognized at OS

level.

Is it possible to use all the RAM available without exploiting the OS

page file?

We are going live within few days.

Could you please tell us how to solve the problem asap?

 

Hardware vendor and model:

- HP DL 380 G5 with 16GB ram , HBA card for a fibre channel connection

to the storage HP EVA 4000 (HSV200-B), N° 2 local hard disk for the

local boot ( 2 x 72GB), N° 2 lan card 1000tx.

Operating system: Windows 2003 Enterprise ed. English version R2 with

SP2

[Guest Edwin vMierlo [MVP]]

Re: /PAE /3G problem

 

Multi posted, answered in

 

microsoft.public.windows.server.clustering