Setup Guide

10 Overview
• High Availability — XenServer Dell Edition supports several features to
guarantee service uptime in the event of infrastructure failure. You can
configure resource pools for automated high availability. For example,
in the case of individual host failures, you can move VMs running on
the failed hosts to the next available system in the resource pool
and restart them.
• Optimized footprint and controlled environment — XenServer Dell
Edition is optimized for a smaller disk footprint and writes to flash storage.
Most of the XenServer Dell edition file system is Read Only and thus
provide a tighter control over the XenServer operating environment.
The XenServer Dell Edition host agent software is significantly optimized
to minimize the number of write cycles. XenServer writes to flash storage
only when something important has changed and must be recorded. Write
minimization helps improve the life of the storage device.
• Improved reliability and diskless configurations — Running XenServer
Dell Edition on the internal flash storage of a system provides improved
reliability over running on traditional hard disk drives. Flash storage does
not have mechanical parts.
Since XenServer can reside on the internal flash storage of a system, there
is no need for local hard drives on the system. XenServer hosts can connect
to remote internet small computer system interface (iSCSI) or Network
File System (NFS) storage and take advantage of features such as Citrix
XenMotion™ to minimize VM downtime and workload migration. For
more information on the current support policy for diskless configurations,
see the
XenServer Dell Edition Release Notes available on the Citrix
XenServer Dell Edition website at
citrix.com/xenserver/dell.