virtual virtualisation

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© The Association of Independent Schools of NSW Virtual Virtualisation Got no money? Fear not! There is a way…

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Virtual Virtualisation. Got no money? Fear not! There is a way…. Why would you bother. Scenario – Server down No DNS/DHCP Problems with login No LDAP No access to files from outside No administration/imaging software No printing - ouch!. Disaster recovery - Services. - PowerPoint PPT Presentation

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Page 1: Virtual Virtualisation

© The Association of Independent Schools of NSW

Virtual Virtualisation

Got no money? Fear not! There is a way…

Page 2: Virtual Virtualisation

© The Association of Independent Schools of NSW

Why would you bother

Scenario – Server down

No DNS/DHCP

Problems with login

No LDAP

No access to files from outside

No administration/imaging software

No printing - ouch!

Page 3: Virtual Virtualisation

© The Association of Independent Schools of NSW

Disaster recovery - Services

Replacing a corrupt server

1 2

VM1

VM2

VM3

VM4

Host OS

Virtualisation Software

Backup of VMs

on external HDD

Page 4: Virtual Virtualisation

© The Association of Independent Schools of NSW

Disaster Recovery - Data

Restoring access to data volumes

1 2

VM1

VM2

VM3

VM4

Host OS

Virtualisation Software

V1

V4

V2

V3Fibre switch

Virtualised Server SAN

Copy server and connect to data volume

Page 5: Virtual Virtualisation

© The Association of Independent Schools of NSW

Page 6: Virtual Virtualisation

© The Association of Independent Schools of NSW

Disaster Recovery – The Lot

Source hardware

Download Linux from Internet or buy DVDs

Restore servers from external HDD

Copy data from backup server

Away we go!

Page 7: Virtual Virtualisation

© The Association of Independent Schools of NSW

How can it be done?

Hardware with VT technology and plenty of RAM

Scenario 1 - VMware

Mainstream Linux or Windows

VMware free server

Scenario 2 - XEN

SUSE Linux OES2 with Xen

Linux or Windows

VMware

VM1 VM2 VM3 VM4

Linux with XEN

VM1 VM2 VM3 VM4

Page 8: Virtual Virtualisation

© The Association of Independent Schools of NSW

Installation of VMs

Install your host OS (Domain 0)

Install VMware server for Linux or Windows or use XEN Virtual Machine Manager

Create virtual machine (specify RAM and HDD allocation)

Install OS on VM

Install apps

Clone your VM as many times as you like

Page 9: Virtual Virtualisation

© The Association of Independent Schools of NSW

How to do it

Page 10: Virtual Virtualisation

© The Association of Independent Schools of NSW

Page 11: Virtual Virtualisation

© The Association of Independent Schools of NSW

Page 12: Virtual Virtualisation

© The Association of Independent Schools of NSW

Page 13: Virtual Virtualisation

© The Association of Independent Schools of NSW

Page 14: Virtual Virtualisation

© The Association of Independent Schools of NSW

Page 15: Virtual Virtualisation

© The Association of Independent Schools of NSW

1 2

VM1

VM2

VM3

VM4

Host OS

Virtualisation Software

1 2

VM5

VM6

VM7

VM8

Host OS

Virtualisation Software

Server 1 Server 2

Redundant virtualised server

Page 16: Virtual Virtualisation

© The Association of Independent Schools of NSW

2

VM1

VM2

VM3

VM4

Host OS

Virtualisation Software

1 2

VM5

VM6

VM7

VM8

Host OS

Virtualisation Software

Server 1 Server 2

Hardware failure

Page 17: Virtual Virtualisation

© The Association of Independent Schools of NSW

1 2

VM1

VM2

VM3

VM4

Host OS

Virtualisation Software

V1

Guest

OS

V4

Data

V2

Data

V3

DataFibre switch

Virtualised server with SAN

Guest OS on SAN

Page 18: Virtual Virtualisation

© The Association of Independent Schools of NSW

Guest OS on Virtual Machine

1 2

VM1OS

VM2OS

VM3OS

VM4OS

Host OS

Virtualisation Software

V1

Data

V4

Data

V2

Data

V3

DataFibre switch

Page 19: Virtual Virtualisation

© The Association of Independent Schools of NSW

Why else would you do it

Install app on real server hardware after trial

Refresh hardware

Legacy software

Clone servers

Get a new server for the price of more RAM!

Page 20: Virtual Virtualisation

© The Association of Independent Schools of NSW

Renate McKenzie

Director of ICT

Roseville College

[email protected]

Contact Details