What is the maximum supported memory for Red Hat Enterprise Linux 5 and 6?

Solution Verified - Updated -

Issue

  • According to the following site, maximum memory of RHEL5 is unlimited. http://www.redhat.com/rhel/compare/
  • I'm installing a system with 1.5 TB of memory. The memory is ok but the kernel only detects 1 TB of memory.
  • Is there a limitation on ram size for RHEL 5.9?

Environment

  • Red Hat Enterprise Linux 4 x86
  • Red Hat Enterprise Linux 4 x86_64
  • Red Hat Enterprise Linux 5 x86
  • Red Hat Enterprise Linux 5 x86_64
  • Red Hat Enterprise Linux 6 x86
  • Red Hat Enterprise Linux 6 x86_64

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