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 has been 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 as it does not have
mechanical parts.
Since XenServer can reside on the internal flash storage of a system, there
is no need for local hard disk 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
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.