RED hat ENTERPRISE VIRTUALIZATION
FOR SERVERS 2.2: FEATURE matrix
Red hat enterprise virtualization for servers
Server virtualization offers tremendous benefits for
enterprise IT organizations — server consolidation, hardware abstraction, and internal clouds deliver a high
degree of operational efficiency. However, today, server
virtualization is not used pervasively in the production
enterprise datacenter. Some of the barriers preventing
wide-spread adoption of existing proprietary virtualization
solutions are performance, scalability, security, cost, and
ecosystem challenges.
Red Hat Enterprise Virtualization for Servers is an endto-end virtualization solution that is designed to overcome these challenges, enable pervasive datacenter
virtualization, and unlock unprecedented capital and
operational efficiency.
The Red Hat Enterprise Virtualization portfolio builds
upon the Red Hat Enterprise Linux platform that is
trusted by thousands of organizations on millions of systems around the world for their most mission-critical
workloads. Combined with KVM, the latest generation of
virtualization technology, Red Hat Enterprise Virtualization
for Servers delivers a secure, robust virtualization platform
with unmatched performance and scalability for Red Hat
Enterprise Linux and Microsoft Windows guests.
The Red Hat Enterprise Virtualization for Servers product
consists of the following components:
Red Hat Enterprise Virtualization Hypervisor: A modern
hypervisor based on KVM that can deployed either as:
the included standalone, small footprint, high-performance,
secure hypervisor based on the Red Hat Enterprise Linux
kernel.
Or
Red Hat Enterprise Linux: Red Hat Enterprise Linux
(purchased separately) integrates KVM hypervisor technology, allowing customers to increase their operational and
capital efficiency by leveraging the same hosts to run both
native Red Hat Enterprise Linux applications and virtual
machines running supported guest operating systems.
Features & BENEFITS
When you are choosing a virtualization platform for
your datacenter, your architecture and capabilities may
be limited by the features offered by each product.
This document details the features and benefits of the
Red Hat Enterprise Virtualization for Servers product in
comparison with VMware® vSphere® 4 and Microsoft®
Hyper-V® 2008 R2.
This document is designed to give you information about
Red Hat Enterprise Virtualization for Servers, and to allow
you to compare features and benefits across multiple virtualization platforms.
Red Hat Enterprise Virtualization Manager: A feature-rich
server virtualization management system that provides
advanced management capabilities for hosts and guests,
including high availability, live migration, storage management, system scheduler, and more.
www.redhat.com
Feature
Red Hat
Enterprise
Virtualization
for Servers 2.2
VMware
vSphere 4.0
Microsoft Hyper-V 2008
R2
Bare Metal Hypervisor: A bare metal hypervisor
is one that installs directly on the server hardware
without requiring a full operating system. Red Hat
Enterprise Virtualization leverages the modularity
of Red Hat Enterprise Linux to provide hypervisor
functionality without requiring a monolithic
operating system to reside on.
X
X
NO. Server Core and Hyper-V
Server 2008R2 installations
are minimum 3GB disk space.
Small Footprint: The Red Hat Enterprise
Virtualization Hypervisor is <100MB, suitable for
installation on local flash storage, boot from SAN,
or PXE booting.
X
X
NO
Security: Only Red Hat Enterprise Virtualization
leverages open source, enterprise-grade security
developed in partnership with government agencies
for high security. Red Hat Enterprise Virtualization
uses the SELinux standard for security, and is backed
by Red Hat Network for security updates.
X
NO
NO
Maximum 512 vCPUs
per host. 512 logical
CPUs per host.
Maximum 512 vCPUs
per host. 64 logical
CPUs per host.
Maximum 64 vCPUs per host.
64 logical CPUs per host.
16 vCPUs per VM
8 vCPUs per VM (4
vCPUs per Linux VM)
8 vCPUs per VM (4 vCPUs per
Linux VM)
1TB RAM per physical
host
256GB RAM per
physical host (1TB for
Enterprise Plus)
32GB RAM with Standard/
Hyper-V Server or 1TB with
Enterprise/Datacenter
Hypervisor Features
Resource Virtualization
CPU Virtualization: Red Hat Enterprise
Virtualization is able to present up to 512 logical
CPUs (combination of cores and hyperthreading) on
each host to virtual machines. Each VM can use up to
16 vCPUs for maximum efficiency.
Memory Management
Memory Limits
256GB RAM per VM
255GB RAM per VM
64GB RAM per VM
Memory Overcommitment: Red Hat Enterprise
Virtualization can allocate more virtual memory
to its VMs than the host has physical memory.
X
X
NO
Page Sharing: Memory page sharing allows VMs with
like operating systems to share physical memory to
store redundant memory pages.
X
X
NO
Processor Hardware Memory Assist: Reduces
the time required to exchange memory resources
between the host and the virtual machine using the
latest x86 processors.
X
X
NO
2 www.redhat.com
Feature
Red Hat
Enterprise
Virtualization
for Servers 2.2
VMware
vSphere 4.0
Microsoft
Hyper-V 2008 R2
Virtual NICs: The hypervisor can present to each virtual
machine multiple virtual network interface cards, each of which
can map to different virtual networks and physical NICs on the
host machine.
8 per guest
10 per guest
Max of 8 “internal” NICs
for VM to VM traffic, 4
“external” NICs for
connection to rest
of network.
vLANs: Support for virtual LANs on the virtual NICs inside the
virtual infrastructure.
X
X
Requires Host OS and VM
OS configuration.
Network Offload: Reduces CPU resources needed to process
virtual networking and network IO by offloading to compatible
NIC hardware.
X
X
X
Jumbo Frames
X
X
X
NEW Server Hardware Enablement: Red Hat Enterprise
Virtualization is certified on all hardware currently certified for
Red Hat Enterprise Linux 5, including the latest Intel® Xeon®
7500 and 5600 series and AMD® Opteron® 6000 series chipsets. Supported servers include systems from Cisco®, Dell®,
Fujitsu®, Fujitsu Siemens®, Hewlett Packard®, Hitachi®, IBM®,
Intel®, Lenovo®, NEC®, SGI®, Sun Microsystems®, Tyan®, Unisys®,
and others.
X
X
X
Storage: Red Hat Enterprise Virtualization is supported on all
storage hardware certified for Red Hat Enterprise Linux 5.
X
X
X
Networking: Red Hat Enterprise Virtualization includes support for network hardware and interfaces certified for Red Hat
Enterprise Linux 5.
X
X
X
Guest Operating Systems:
Red Hat supports
Windows 2003, 2008
and RHEL 3,4,5+.
Support for most
x86 operating
systems, including Windows,
Linux, UNIX.
Windows 2003, 2008
(certain SPs only), SuSe,
RHEL 5+ only (max 4
vCPU for Linux guests).
X
NO. Single level of high
availability for VMs.
Requires Windows
Clustering.
Networking
Red Hat Enterprise Virtualization Ecosystem
Support for desktop operating systems with RHEV for
Desktops.
MANAGEMENT FEATURES
High Availability
NEW Mulitlevel Priority Intelligent Failover: Red Hat
Enterprise Virtualization high availability ensures that high
priority virtual machines are automatically restarted on failure
of the VM itself or the host on which it resides. Multiple levels
of priority give highest restart priority to the most
important VMs.
X
www.redhat.com 3
FEATURE
Red Hat
VMware
vSphere 4.0
Microsoft
Hyper-V 2008 R2
Maintenance Mode: Red Hat Enterprise Virtualization hosts
undergoing maintenance automatically have their guest VMs
migrated to other available hosts and are removed as targets
for migration until maintenance is complete.
X
X
NO
X
vMotion requires
Advanced or higher.
Yes in R2, requires Windows
Clustering.
Shared Resource Pools: Pools of resources such as CPU,
memory, and storage are aggregated and managed at the
datacenter or cluster level rather than machine-by-machine.
X
X
NO
Cluster Resource Policies: Red Hat Enterprise Virtualization
allows administrators to set cluster policies for resource
smoothing.
X
Enterprise and
Enterprise Plus only
(DRS).
NO
Thin Provisioning: Allows the creation of virtual machines
with virtual disks that do not take up all of their allowed space
upon creation. This allows better use of storage resources
as needed.
X
X
X
Templates: Virtual machines can be deployed from master
installations. This saves time and disk space, as templatedriven virtual machines can be stored with only the differences between the template and the VM on disk.
X
X
X
Central Control and Visibility: Red Hat Enterprise
Virtualization Manager is your single-view management GUI
for your entire enterprise virtualization infrastructure.
X
X
Requires multiple products to
fully manage.
Host and VM Management: Red Hat Enterprise Virtualization
Manager provides host and VM management.
X
X
X
System Monitoring: System status can be monitored from
Red Hat Enterprise Virtualization Manager.
X
X
Requires SCOM.
Migration
Live Migration: Red Hat Enterprise Virtualization can
automatically or manually migrate running virtual machines
from one host to another without downtime when the virtual
disk files reside on a shared storage substrate.
System Scheduler
Image Management
Control, Monitoring, and Reporting
4 www.redhat.com
FEATURE
Red Hat
VMware
Enterprise
vSphere 4.0
Virtualization
for Servers 2.2
Microsoft
Hyper-V 2008 R2
Alerts and Notifications: Red Hat Enterprise Virtualization Manager
can report errors and warnings to administrators via email.
X
X
X
Remote Console: Red Hat Enterprise Virtualization Manager allows
console access to virtual machines using secure VNC or desktop-optimized SPICE® remote desktop technology.
X
X
X
Access Control: Administrative and user access to your virtual datacenter can be controlled and managed from Red Hat Enterprise
Virtualization Manager.
X
X
X
Active Directory Integration: Red Hat Enterprise Virtualization
Manager interfaces with your existing Microsoft Active Directory for
user access and authentication.
X
X
X
Roles and Permissions: Users and administrators can be assigned
granular security access to your datacenter from the Red Hat
Enterprise Virtualization Manager interface.
X
X
X
PXE Boot Support: Red Hat Enterprise Virtualization Manager supports PXE boot for network installation of virtual machines.
X
X
X
Logging: Red Hat Enterprise Virtualization Manager provides extensive logging for troubleshooting and research.
X
X
X
Application Programming Interface (API)
X
X
X
Storage Virtualization: Red Hat Enterprise Virtualization aggregates and distributes storage resources to maximize flexibility and
utilization.
X
X
X
Virtual Disk Files: Virtual disks are stored as disk files on the various
storage domains.
X
X
X
Shared Storage: Red Hat Enterprise Virtualization can use NFS, iSCSI,
and Fibre Channel shared storage for the storage of virtual machines.
X
X
X
Shared Storage: Red Hat Enterprise Virtualization can use NFS, iSCSI,
and Fibre Channel shared storage for the storage of virtual machines.
X
X
Limited
Storage Multipathing
X
X
X
NEW VM Backup: Red Hat Enterprise Virtualization supports thirdparty backup agents running inside VMs for data and operating system backup.
X
Also supports
VCB proxy-based
backup
X
NEW Import/Export: Red Hat Enterprise Virtualization now supports
import and export of virtual machines in the standard OVF format.
X
X
X
Virtual Storage
Recovery
www.redhat.com 5
FEATURE
Red Hat
VMware
Enterprise
vSphere 4.0
Virtualization
for Servers 2.2
Microsoft
Hyper-V 2008 R2
NEW V2V tools: New V2V (virtual to virtual) tools allow conversion of
Red Hat Enterprise Linux/Xen and VMware to the Red Hat Enterprise
Virtualization format.
X
X
X
VM snapshots: Red Hat Enterprise Virtualization virtual machine
snapshots allow administrators to apply patches and upgrades in a
transactional way, and roll back to a known good snapshot if the patch
runs into an issue.
X
X
X
Additional Information
WHAT NEXT?
All information in this document concerning Red Hat
Enterprise Virtualization for Servers was accurate as of
June 2010. There may be changes in the current release—
please reference the release notes for your installed version. All information concerning products from other
manufacturers was taken from publicly available materials
as of June 2010 with no warranty as to its accuracy. Please
check manufacturers’ websites for the latest information
and specification on their products.
For more information, please go to www.redhat.com/rhev
or contact your local Red Hat reseller.
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