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Red Hat Enterprise Linux 6 Essentials eBook now available in PDF and ePub formats for only $9.99
RHEL 6 Essentials contains 40 chapters and over 250 pages.

Chapter 2. System requirements

This chapter lists system requirements for successfully running virtualized guest operating systems with Red Hat Enterprise Linux 6. Virtualization is available for Red Hat Enterprise Linux 6 on the Intel 64 and AMD64 architecture.
The KVM hypervisor is provided with Red Hat Enterprise Linux 6.
For information on installing the virtualization packages, read Chapter 5, Installing the virtualization packages.
Minimum system requirements
  • 6GB free disk space
  • 2GB of RAM.

KVM overcommit

KVM can overcommit physical resources for virtualized guests. Overcommitting resources means the total virtualized RAM and processor cores used by the guests can exceed the physical RAM and processor cores on the host. For information on safely overcommitting resources with KVM refer to Chapter 20, Overcommitting with KVM.
KVM requirements
The KVM hypervisor requires:
  • an Intel processor with the Intel VT and the Intel 64 extensions, or
  • an AMD processor with the AMD-V and the AMD64 extensions.
Refer to Section 24.3, “Verifying virtualization extensions” to determine if your processor has the virtualization extensions.
Storage support
The working guest storage methods are:
  • files on local storage,
  • physical disk partitions,
  • locally connected physical LUNs,
  • LVM partitions,
  • NFS shared file systems,
  • iSCSI,
  • GFS2 clustered file systems, and
  • Fibre Channel-based LUNs
  • SRP devices (SCSI RDMA Protocol), the block export protocol used in Infiniband and 10GbE iWARP adapters.

File-based guest storage

File-based guest images should be stored in the /var/lib/libvirt/images/ folder. If you use a different directory you must add the directory to the SELinux policy. Refer to Section 16.2, “SELinux and virtualization” for details.

 
 
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