Basic VmWare DataStore Stats

Get Basic VMWare DataStore Statistics via PowerShell PowerCLI

Big thanks to LucD, and this post which is essentially the entire solution: https://communities.vmware.com/t5/VMware-PowerCLI-Discussions/PowerCLI-script-to-get-DatastoreCluster-Datastores-and-the-size/td-p/1301104

Problem: I need stats on datastores. Specifically, i need to find which DataStores are over-provisioned compared to the VM’s assigned to it.

Solution:

	[CmdletBinding()]
	param(
	[Parameter(Mandatory=$True,Position=0,HelpMessage="The script will output to .CSV datastore statistics for the provided vCenter Server hostname or FQDN")]
	[string]$vCenter
	)
	Import-Module VMware.VimAutomation.Core | Out-Null
	try {
	Connect-VIServer -Server $vCenter -Protocol https -Force -ErrorVariable err -ErrorAction SilentlyContinue | Out-Null
	} catch {
	Out-Null
	} finally {
	if ($err.Count -eq 0) {
	Write-Output "Fetching DataStore statistics..."
	$datastores = get-datastore
	$report = foreach ($store in $datastores) {
	$store | Select @{N='Datacenter';E={$_.Datacenter.Name}},
	@{N='DSCluster';E={Get-DatastoreCluster -Datastore $_ | Select -ExpandProperty Name}},
	Name,CapacityGB,@{N='FreespaceGB';E={[math]::Round($_.FreespaceGB,2)}},
	@{N='VMCount';E={$_.ExtensionData.VM.Count}},
	@{N='ProvisionedSpaceGB';E={[math]::Round(($_.ExtensionData.Summary.Capacity - $_.Extensiondata.Summary.FreeSpace + $_.ExtensionData.Summary.Uncommitted)/1GB,2)}},
	@{N='UnCommittedGB';E={[math]::Round($_.ExtensionData.Summary.Uncommitted/1GB,2)}},
	@{N='FreeGB/CapacityGB %';E={[math]::Round(($_.FreespaceGB/$_.CapacityGB)*100,2 -f 000.00)}},
	@{N='ProvisionedGB/CapacityGB %';E={[math]::Round(($_.ExtensionData.Summary.Capacity - $_.Extensiondata.Summary.FreeSpace + $_.ExtensionData.Summary.Uncommitted)/$_.CapacityGB/1GB*100,2 -f 000.00)}}
	}
	$report | Sort-Object -Property 'ProvisionedGB/CapacityGB %' | Export-Csv datastore-stats.CSV -NoTypeInformation -UseCulture
	ls datastore-stats.CSV
	disconnect-viserver -Confirm:$false
	} else {
	Write-Output "failed to connect to ${vCenter}. Exiting."
	Exit
	}
	}

view raw datastore-stats.ps1 hosted with ❤ by GitHub

The script will output to .CSV file sorted by ProvisionedGB/CapacityGB percentage.

As such, you may see which datastore are heavily over-provisioned (in the sense of datastore larger than necessary).
Of course, you may also sort my other columns as needed.

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