Your network contains an Active Directory domain named contoso.com. The domain contains a server named
Server1. Server1 runs Windows Server 2012 and has the Hyper- V server role installed.
On Server1, you create and start a virtual machine named VM1. VM1 is configured as shown in the following
table.
You need to recommend a solution to minimize the amount of disk space used for the snapshot of VM1.
What should you do before you create the snapshot?
A.
Convert diskl.vhd to a dynamically expanding disk.
B.
Shutdown VM1.
C.
Decrease the Minimum RAM.
D.
Decrease the Maximum RAM.
Answer B
Was the VM running when you took the snapshot?
Here is a big one. If the VM was running the VM can be restored to that previously running state. Thus all that occupied memory space must be saved as well. Now, not only is the disk (potentially) using more storage, but the SQL instance in the VM was set to use 2Gb of RAM, and all of that memory space must be saved as well.
http://itproctology.blogspot.ca/2009/04/hyper-v-snapshots-are-tkaing-up-large.html
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the answer is surely B
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It has to be B – what happens if the disk is full?
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B.
“On Server1, you create and start”, only beginning from R2 you can do that kinda stuff on running VMs
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It should be B and totally not A, people would go with D as decreasing the Max Ram will help with storage saving, and sure it will not save as much as if you shutdown the VM. Basicly with shutdown you merge the avhd with the main VHD and that is saving space.
http://social.technet.microsoft.com/Forums/en-US/53006d04-5f02-430f-a81d-d45238e22598/decreasing-the-size-of-the-snapshot?forum=winserverhyperv
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It’s B but not for what Leopardo says.
That merge only happens when you delete the snapshot, besides in 2012 the shutdown isn’t needed any more (all the references are about 2008 r2!).
Snapshot does 3 things:
– store vm settings
– create a differencing disk (avhd)
– save active memory.
As there’s no active memory when you shutdown the vm it will save a lot of (initial) space.
Note that the differencing disk will keep growing as long as the snapshot exists. Delete snapshots or delete the snapshot/checkpoint tree will free up diskspace AFTER a snapshot was taken.
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