Windows 2008 Hyper-Visor

Dear Guys please read this carefully, will definitly give you some idea of Windows 2008 Hypervisor......

 

Microsoft Position in the virtualisation market place prior to the release of windows 2008 wasn't one where microsoft particularly had a bad product, it was because Microsoft jumped into virualization space just 4 to 5 years before the release of Windows 2008 virtualization. being relatively newto the virtualization space, Microsoft has some catching up to do.

Microsoft jumped ino virtualization marketplace through the acquisation of a company called Connectix in 2003. At the timeof the acquisation, Virtual PC provided a virtual session of windows on either a windows or a macintosh computer system. virtual pc was used largely by organisation testing server software or performaing demos of windows system on desktop and laptop systems- or in the case of virtual pc for the MAC, the abilty for a macintosh user to run windows on thier Macintosh computer. Microsoft later dropped the development of virtual pc for the MAC; however it continues to develop virtualization for windows sysem with the release of Virtual PC 2007. Virtual PC 2007 allows user running Windows XP or Windows Vista to install, configure and run virtual guest seesions of Windows server or even non-Windows Operating Systems.
Microsoft had to make some significant changes to the OS that hosted its next-generation virtual server technology. With Windows 2008 in development, Microsoft took the opportunity to add in a core technology to Windows 2008 that provided the basis of Microsoft future dominance in server Vitualisation. The core technology is called HyperVisor, which effectively is a layer within the host operating system that provides better support for guest operating systems. Microsoft calls their Hypervisor-based technology Hyper-V.

 

Whats new in Hypervisor.........

Support for both 32bit & 64bit guest sessions, support for greater guest session memory allocation greater than (32GB) of  memory per session, support for upto four cores per guest sessions.

 

Few FAQ which i came across may be a info to you all guyssssssss

 

1. Maximum RAM for Single Virtual Machine can be allocated? (64GB)

2. No of processor per Virtual Machine can be allocated? (4 Logical Processor)

3. How to guest Virtual machine contact parent Virtual Machine? ( Via Virtual Machine Bus)

4. Why you go for Hypervisor VM? ( Guest Clustering, Centralized management, Server Consolidation, Performance, Clustering High, VM Clonning, Physical-Virtual, Virtual-Physical, etc....)

5. Pre-requiste before installing Hypervisor in windows 2008? ( 2k8 64bit OS, Hardware virtualization awareness, check virtualization option enabled in BIOS, Enabled hardware level DEP)

6. Is VM Bus shared to all virtual machines? (No, Every VM LAN had direct connection with its parent VM)

7. Wireless N/w? ( no wireless networking support)

8. Please refer to KB950050

9. How many memory is overheaded when you allocate a particular of RAM to VM. ( you need o add extra +21)

10. What is Difference Harddisk in Virtualisation? ( Extension of primary HDD in case of low space in primary HDD or if you just simply want to increase)

11. Any link with AD? (No, only when you install SVCM or clustering you need to be member of domain or insall in a DC)

12. When you will use difference HDD mainly? ( mainly when you have installed VM with one HDD and later on you see that your C drive which is the only partition and you want to extend, you can create difference HDD.

13. What are difference HDD also called? ( the first difference HDD for a particular VM is called as Child partion)

14. Can you merge difference HDD or child Partion with the Parent Partion which is your primary one? ( Only when youhabe 1 primary partion and 1 child parition you can merge that 1st child parition into primary partition but not the second or third difference HDD)

15. When your power goes off suddenly, what happens to your VM? ( It gets shutdowns all the VM with the Host OS and when the host OS starts all the VM Starts with the Host but shows saved states when you open the VM in Hypervisor console.)

16. What is automatic start option? ( let say you have multiple VM installed in the Server and each server depends on each of them, like First DNS Server needs to boot up, then your DC needs to boot up and then Exhange Server needs to be online and so on in sequence. let say your power goes of suddenly on the server and when you boot the server the whole server boots up at same moment so it takes a huge processing, more RAM, Disk IO process, N/w IO Process and so on, the automatic option is a cool new feature in windows 2008, where it gives options which VM to be start in what time like DNS should be boot up in 3mins, then DC should boot after that in 3mins, and then Exchange server in another 3mins and so on ......by this way it reducess the process......isn't it?

Guys if any further updates i get, will update you. Hope this finds you very informative.....please share