From: Yves Bellefeuille Sent: June 19, 2012 15:55
I can't find the limit for CentOS 6, but CentOS 5 x86 was limited to 16 Gb of RAM: https://www.centos.org/product.html . You should use x86_64.
If that is the case then both CentOS 5 and 6 are not viable for us. I will have to go for RHEL5 (or possibly 6) which does support the memory in 32-bit mode.
The reason for the restriction to 32-bit is because of other software that we must run that does not work correctly on a 64-bit OS.
Regards, Hugh