XenServer 5.5 - Czy można zaoszczędzić na wirtualizacji serwerów? Darmowy XenServer i komercyjny Essentials.

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XenServer 5.5
Czy można zaoszczędzić na
wirtualizacji serwerów? Darmowy
XenServer i komercyjny Essentials.

Przemek Zębik
SE Citrix Systems Eastern Europe

© 2009 Citrix Systems, Inc. — All rights reserved

Server virtualisation: Myths (Gartner 12/2008)

Myth 1: Server virtualization is widespread among enterprises
Truth: Only 15% of all workloads are running on virtual machines toda
- By 2012 it will rise up to 50%

Myth 2: Users want to save money by virtualization
Truth: The original reason to virtualize i mainly to reduce costs, but
is
statistics show, that after a while IT flexibilty becomes priority number

Myth 3: The market will soon head into a deadend street
Truth: The market is large enough – Server virtualization,
infrastructure management and – automation up to Cloud Computing.
Server virtualization is well know to the Mainframe world for a long
time(first release1972)


Citrix XenServer


nearbare
metalspee

XenServer –
Components and functionality
omponents


asis of XenServer:
Hypervisor optiona
en Hypervisor integrated into
System-Firmware

Xen Hypervisor

el VT- and AMD V-
Interface


64 bit architecture High scalable

Open Source Xen Hypervisor Secure
industry Design
standard (verified by
NSA, CIA,
Xen Hypervisor Dept. of
Defense u.


Updated Xen-Hypervisor for more performance

en 3.3-basis in XenServer 5.5
ptimized for Intel "Nehalem"
d AMD "Shanghai"
ocessors
ew "Shadow" Page Table
rtualization support for huge
orkloads


terprise virtualization and Cloud
Cloud-Computing
Center
ource Pools
Comparable
Motion functionality
red FC, iSCSI and NFS Storage from other
vendors at
$5000+ per
download under www.citrix.com server


Key Features – XenServer 5.5
oud-Proven. Enterprise Class. Free.

•High-Performance, live VM disk snapshots
Performance,
Enhanced
•Auto-select software
select software-based or SAN-based
Snapshots •GUI based administration
GUI

Backup • Enables third-party solutions to backup XenServer VM’s
party
• VSS-based interface
based
Enablement
• Fast cloning (10 seconds or less)

Active Directory • Eliminate Single User Administration Model (root)
Integration • Login to XenCenter using AD credentials
• Administrative Logs by user


Citrix Essentials
Feature overview


Citrix Essentials
Essentials for XenServer
Platinum

• Provisioning Server
Essentials for XenServer
or • Lab Management
Enterprise • Stage Management

XenServer (free) • High Availability • High Availability
• Storage Link™ • Storage Link™
• Workload Balancing • Workload Balancing
• Workflow Studio • Workflow Studio

• E-Mail Alerting • E-Mail Alerting • E-Mail Alerting
• XenMotion • XenMotion • XenMotion
• XenCenter • XenCenter • XenCenter
• Optional Support • Optional Support • Optional Support


Snapshots


Snapshots with or without Storage

LVHD (Logical Virtual Hard Disk
Disk)
technology extends LVM SRs
Best of both worlds
• Features from VHD
• Performance from LVM
High-Performance, live VM Disk
Snapshots
Auto Select: Software- or SAN-based
based
(StorageLink)
GUI-based Administration


Backup-Support
-Support
-


VM Backup
Backup within guest
• Like backup of physical machines
• Backup-traffic has impact on performance from
• Storage Fabric, Storage Array, VM Storage I/O, productiveVMs and hosts

Better: XenServer 5.5 – supports consolidated backup
• „Big Fat LUN“-Model
• Proxy System adopts Offload of Backup activity of
• Productive hosts and VMs
• Backup-Traffic has impact on performance of
• Storage Fabric, Storage Array, VM Storage I/O (impact on LUN)

Best: StorageLink – lower performance impact
• StorageLink uses Storage Array Snapshots
• Offload of backup activitities of
• Productive hosts, Storage Fabric, Storage Array


Active Directory
Directory-Integration


Active Directory-Authentication
Authentication

Gives XenServer management
privileges to selected AD-Users
Configurable via XenCenter and CLI
One setup per Resource Pool
no AD Schema extension
Local Super User Account remains
existant


High Availablity


High Availability

XenApp XenApp XenApp XenApp XenApp XenApp
Workload 1 Workload 2 Workload 3 Workload 1 Workload 2 Workload 3

XenServer 1 XenServer 2

1. Standard HA Heartbeat
2. Server failure
3. HA Heartbeat fails
4. Automatic VM restart
Shared Storage


High Availability

Shared Storage


Fault Tolerance – High Availability
exclusively for Xen by Marathon


Workload Balancing and Optimization


Workload Balancing and Optimization

Detailed capture of guest and host
performance
Policy-controlled Workload Balancing
via XenServer Pools/Hosts
Optimal Workload-Placement by
XenMotion
Historic analysis and trend-capturing
capturing
for any type of planning


Workload Balancing – important metrics
Parameter
• CPU
• Memory
• Network Read
• Network Write
• Disc Read
• Disk Write

Optimization recommendations
• Will automatically be started, when
threshold has been reached or
exceeded

Workflow Management
(Citrix Workflow Studio)


tomation of Workflows

allenge
Manual tasks are causing delays and errors
Script development requires time and skills
High Requirements on IT

vantages by
rkflow Management
Automatiion of recurring tasks
Creates services by usage of Microsoft
Powershell™
Automatically sets up new servers


Citrix Workflow Studio

• Composition of Workflows with a UI -
without scripting
• Easy control of different Citrix products
• Quick integration of Citrix products and
third party technologies


Lab and Stage Management


T Lab Management – Buildup of a test environment
dup

Development

• Reproducible creation of test scenarios
Test / QA • Control of server extensions
• Ensuring consistent environments
Training
• Reproducible environments for
troubleshooting
Support


Immediate operation for production- and test
production
environments
XenApp XenApp XenApp
workload workload workload

XenServer Dev XenServer Test

XenApp XenApp XenApp XenApp XenApp XenApp
workload workload workload workload workload workload


StorageLinkTM


Enhanced Storage-Integration with StorageLink
Integration

Virtualization can make the
Virtual integration into storage so
Server complex, that expensive Storage
systems are treated like “dumb
harddisks”

Citrix StorageLink Technology
Virtual Citrix enables any virtual server to take
Server StorageLink Storage
advantage from the complete
functionalities provided by the
exisiting (and paid) Storage Syste

Open Standard StorageLink Gateway - Overview
I-S i (Storage
nagement Initiative-
ecification) is the
ferred method for
gration, because there
o additional
elopment necessary
XenServer

Dell

Vendor specific VSM
Storage-Adapter are
running in separate
processes

Citrix Ready Open Storage-Programm
Programm
nbreakable operation with Essentials for XenServer
entials


XenServer 5.5 - Czy można zaoszczędzić na wirtualizacji serwerów? Darmowy XenServer i komercyjny Essentials.

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