© the association of independent schools of nsw virtual virtualisation got no money? fear not!...
TRANSCRIPT
© The Association of Independent Schools of NSW
Virtual Virtualisation
Got no money? Fear not! There is a way…
© 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!
© 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
© 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
© The Association of Independent Schools of NSW
© 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!
© 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
© 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
© The Association of Independent Schools of NSW
How to do it
© The Association of Independent Schools of NSW
© The Association of Independent Schools of NSW
© The Association of Independent Schools of NSW
© The Association of Independent Schools of NSW
© The Association of Independent Schools of NSW
© 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
© 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
© 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
© 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
© 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!
© The Association of Independent Schools of NSW
Renate McKenzie
Director of ICT
Roseville College
Contact Details