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VMware compose Usage

If I understand VMware composer.:

We can create one VMachine (Master Image), and each time a user connects to Master image it creates  a clone of it (separate image of the VMachine).
In this case how fast can it be to automatically create a copy of the VMachine and make it available to the end user ?
they claim that with VM composer you save space in the storage. I don't see how you save space, since you are creating a copy of the Master image.

Any clearance on this Question?

Thanks
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jskfan
Asked:
jskfan
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5 Solutions
 
jskfanAuthor Commented:
oops.. I meant View Composer instead of VM composer
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
depends on how fast your storage can clone a VM based on a snapshot!

Storage is saved because the VDI workstation is just the delta snapshot linked to the parent image!

So the VM is created, parent disk already exists, all that is required is the delta creating, power on, OS startup.

1-2 mins or less.

So in simple terms 100 VDI workstations, 40GB golden master image is

Parent 40GB, + 100 * Snapshot Disk+ 100 * 4GB for user persistant disks

which is less than 40GB * 100 disks
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jskfanAuthor Commented:
So, the resources ( Memory and CPU) will run on the master image,  a Delta file will be created for each user  (User profile + Data).
Does this apply to only the PCs that have view client installed on them or any PC that connects to that master image, will get the same thing ?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
You will have 100 Virtual Machines running in my example, but internally the virtual machines are Linked Clones to the original Master Image. So take up less disk space, because the writable element of each clone, is just the Delta, so it can be deployed quickly and use less disk space.

This configuration only applies to the configuration that has been created for the Pool.
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jskfanAuthor Commented:
I meant... should the PC that connects to the master image have the View client installed on it..

I am considering composer concept similat to viewer concept...The PC that connects to the VM Viewer must have View client on it , and the VM machine it uses will have the View Agent.

with the composer concept, I don't know if the end user PC should have the View client (or whatever the name is) and the VM it will use to get the Delta file from will have the View agent(or whatever the name is).

Thanks
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, the PC must have the View Client to connect to a VMware View farm.

The Master Image must have the View Agent installed.

I think you would benefit from reading this VMware View walkthrough, it does not matter it's for 4.5, the concepts are the same.

VMware View 4.5 install
http://paulslager.com/?p=572
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jskfanAuthor Commented:
I have not come to grab well the concept.

For single user connection:

- We create Master image (VM)
-We take a snapshot of the Master image VM.....This will create a Delta file..let s call DF
-Now for End user PC or Think client that have the view client, when he/she connects ....does she connect  to Master image (which I think so) or to the DF ?
Though I believe DF will be used for end user profile and Data...Correct ?

For Linked clones (Multiple users)
- For linked clones when users connect to master image, would the DF host all users profiles and Data, or separate DF will be created for each user ?
- the words Replica and clone are used in the linked clone concepts but cannot get the picture of it yet.

any explanation with examples will be appreciated.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
A virtual machine is created in the pool using the master image and snapshot file DF, this is called a linked clone, the connection broker, which the VMware View Client connects to, diverts the connection to the virtual machine.


End User profile and data is stored in the snapshot.

No, Multiple virtual machines are created.

See here

http://www.vmware.com/support/ws5/doc/ws_clone_overview.html

http://myvirtualcloud.net/?p=1222
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jskfanAuthor Commented:
regarding Replica
Is replica and full clone the same ??
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes just different words.
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jskfanAuthor Commented:
Thank you
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