
ease of use
• Unified logging and debugging simplifies administrative work
• Virtualized KVM guests can be run as managed services, which enables fail-over,
including between physical and virtual hosts
Resource Management:
• Cgroups organize system tasks so that they can be tracked and so that other system
services can control the resources that cgroup tasks may consume
• Cpuset applies CPU resource limits to cgroups, allowing processing performance to be
allocated to tasks
There are many other feature enhancements to Red Hat Enterprise Linux 6. Please see the
Red Hat
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website for more information.
4.3 Red Hat Enterprise Virtualization (RHEV) for Servers
Red Hat Enterprise Virtualization (RHEV) for Servers is an end-to-end virtualization solution
that is designed to enable pervasive data center virtualization, and unlock unprecedented
capital and operational efficiency. RHEV is the ideal platform on which to build an internal or
private cloud of Red Hat Enterprise Linux or Microsoft Windows virtual machines. RHEV
consists of the following two components:
• Red Hat Enterprise Virtualization Manager (RHEV-M): A feature-rich server
virtualization management system that provides advanced capabilities for hosts and
guests, including high availability, live migration, storage management, system
scheduler, and more.
• Red Hat Enterprise Virtualization Hypervisor: A modern hypervisor based on
Kernel-Based Virtual Machine (KVM) which can be deployed as either RHEV-H, a
standalone bare metal hypervisor (included with Red Hat Enterprise Virtualization for
Servers), or as Red Hat Enterprise Linux 5.4 and later (purchased separately) installed
as a hypervisor.
Some key characteristics of RHEV are listed below:
Scalability:
• Host: Up to 512 cores, 1 TB RAM
• Guest/VM: Up to 16 vCPUs, 256 GB RAM
Advanced features:
• Memory page sharing, advanced scheduling capabilities, and more, inherited from the
Red Hat Enterprise Linux kernel
Guest operating system support:
• Paravirtualized network and block drivers for highest performance
• Red Hat Enterprise Linux Guests (32-bit & 64-bit): Red Hat Enterprise Linux 3, 4 and 5
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