I need to host a web server in our company.

We bought the new server which is containing 1000GB

we plan to host Human Resource Information System, Monitoring and evaluation system, and Intranet(web based).

I need to host a web server with virtualizaiton In case i need to extend the Size, i have the feature to extend size of virtualization.

what are the setting i have to do mainly LVM

in based OS how many GB i have to give ?

in the virtualzation how many GB i need to allocate ?


when i create the Virtual OS, it will take capacity from based OS or Unallocated space ?

Can I suggest backing up here? Why are you looking at using virtualization for this?? Just so you can add more disk space? If so, being virtualized won't specifically help you at all, and I'd really recommend avoiding it.

So u r telling to avoid the extend space or avoiding the Virtualiation ?

Defferent companies are developing HRIS, Monitoring and Intranet. i need to make Virtualization ?
because if any problem in thing, it is not effecting to others.. ??

I'm saying that there is no point using virtualization if you are only doing it under the belief that it makes adding disk space, as it doesn't. You'd have to do all the same things as on the native system plus the virtualization stuff on top.

Each projects developed by different companies. if u not virualizaiton, if they restart one server, it iwll effect other server also. that why i asked to host virtualizaition and i have to improve the knowledge in virtualization also..
if u help me, i can improve my knowledge also..

Right, well that's not what you originally said the virtualization is for.

If you're using centOS / RHEL then you would use KVM, not Xen. Xen is no longer supported by them, and KVM is generally much nicer anyway.

why xen is not good for centos ?

because it's not used anymore. If you install CentOS 5.6 or RHEL then it now uses KVM, not Xen. Same goes for Ubuntu and other current systems. KVM is the official Kernel based virtualization, and community usage of Xen has tailed off a lot since Citrix bought Xensource and started using it as a primarily commercial system.