I had a situation where I had 32GB of RAM and only 24 would show and this is what I found out: ----------- "If you have your memory set in Redundancy mode, using Raid 5. What this means is that you have 4 Groups of 8 Gb of RAM, and one of those groups of 8 Gb of RAM is used for parity, just like a Raid 5 virtual drive using 4 8 Gb drives where you are striping the memory across each drive." -----------
I hope this helps! -----Original Message----- From: [email protected] [mailto:[email protected]]on Behalf Of Christopher Adams Sent: Wednesday, December 31, 2008 11:47 AM To: Red Hat Enterprise Linux 5 (Tikanga) discussion mailing-list Subject: RE: [rhelv5-list] 4 GB not recognized after PAE kernel upgrade The working server with CentOS 5.2 is using this kernel: 2.6.18-92.1.18.el5PAE The RedHat server that doesn't show all 4 GB is using this kernel: 2.6.18-92.1.18.el5.centos.plusPAE I will try just using the non-plus PAE. I assume I can just install that and make sure it boots from that kernel, then remove the centos.plusPAE later. WI looked around for a RedHat 5.1 PAE kernel, but couldn't find it, so the CentOS folks told me to use a CentOS kernel, as it is essentially RedHat. If you know of a source for a kernel for RedHat, please let me know. I don't have regular updates on this server, so it will have to be a manual rpm install. _______________________________________________ rhelv5-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/rhelv5-list
