Hi Everyone,
Microsoft has finalized the step to release the SCVMM R2 same time when then they release the windows 7 and Windows 2008 R2. So what is new in SCVMM R2? Below are few key things they have added and improved,
1. Live migration - Running VM's can be migrated to diffrent host. This is thanks for the support of CSV (Cluster Shared Storage) now you can have multiple VM's in LUN despite of one VHD for one LUN.
2. Queuing of Live migrations - In VMM R2, the capability to detect the condition where live migration fails due to another live migration in progress and queue up the request in the background and retry the request after a period of time. The retry intervals are exponentially backed off to avoid overloading the system and the retries are capped to a max time period (15 mins). This feature enables users to do multiple live migrations without needing to keep track of other live migrations that are happening within the cluster and VMM R2 will automatically do the queuing and retries in the background.
3. Host compatibility checks - VM migration requires host hardware to be compatible. This includes things like CPU features, enlightenment parity etc. In VMM R2, we've added deep check for compatibility using Hyper-V and VMWare compat check APIs. This enables users to check if VM is compatible with the destination host instead of doing the migration and then finding out that the VM cannot start on the host.
A related feature is to make VM compatible; it's a setting per VM that turns off certain CPU features in VM so it becomes compatible with the host. This is a tradeoff between using advanced CPU features of the host versus making VM more compatible for migration. This setting requires that the VM be restarted to take effect.
Really cool video is found over here to explain this.
4. Support for Veritas Volume Manager - Added support for Veritas volume manager which enables VMM R2 to recognize Veritas volume manager disk as a cluster disk resource.
More features are on the way. So stay tuned people.
Surf through the virtulization world
