DRAG DROP
You have a server named Server1 that runs Windows Server 2012 R2.
You need to perform the following storage configuration tasks on Server1:
Bring a disk named Disk1 online.
Defragment a volume named Volume1.
Remove a disk named Disk2 from a storage pool named Pool1.
Which cmdlet should you use to perform each task?
To answer, drag the appropriate cmdlets to the correct tasks. Each cmdlet may be used once, more
than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
Answer: 
Initialize-Disk
https://technet.microsoft.com/itpro/powershell/windows/storage/initialize-disk
Results from windows 2012 R2 :
Set-Disk -Number 2 -IsOffline $false will make disk online read only.
Initialize-Disk -Number 2 will make disk online and writable.
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