is a legacy 2011 release for long-term stability of 32-bit and 64-bit applications.
The 5.7 update was designed to bridge the gap between the aging RHEL 5 platform and the then-modern RHEL 6. Key technical highlights included: red hat enterprise linux 5.7 x64 iso 84
: Improved support for Xen and KVM hypervisors, including better fencing for cluster reliability in VMware and Cisco UCS environments. is a legacy 2011 release for long-term stability