Public/Get-AnyStackDatastoreGrowthRate.ps1
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function Get-AnyStackDatastoreGrowthRate { <# .SYNOPSIS Gets datastore growth rates. .DESCRIPTION Calculates daily growth rate based on FreeSpace delta. .PARAMETER Server vCenter Server hostname or VIServer object. Uses active connection if omitted. .PARAMETER DatastoreName Name of the datastore. .EXAMPLE PS> Get-AnyStackDatastoreGrowthRate .OUTPUTS PSCustomObject .NOTES Author: The AnyStack Architect Requires: VCF.PowerCLI 9.0+, vSphere 8.0 U3+ #> [CmdletBinding(SupportsShouldProcess=$false)] [OutputType([PSCustomObject])] param( [Parameter(Mandatory=$false, ValueFromPipeline=$true)] [ValidateNotNull()] $Server, [Parameter(Mandatory=$false)] [string]$DatastoreName ) begin { $vi = Get-AnyStackConnection -Server $Server $ErrorActionPreference = 'Stop' } process { try { Write-Verbose "[$($MyInvocation.MyCommand.Name)] Querying datastore growth on $($vi.Name)" $filter = if ($DatastoreName) { @{Name="*$DatastoreName*"} } else { $null } $datastores = Invoke-AnyStackWithRetry -ScriptBlock { Get-View -Server $vi -ViewType Datastore -Filter $filter -Property Name,Summary } foreach ($ds in $datastores) { $freeGb = [Math]::Round($ds.Summary.FreeSpace / 1GB, 2) $growthRate = $null $days = $null $dsObj = Get-Datastore -Id $ds.MoRef -Server $vi $stats = Get-Stat -Entity $dsObj -Stat disk.used.latest -Start (Get-Date).AddDays(-7) -Finish (Get-Date) -ErrorAction SilentlyContinue if ($null -ne $stats -and $stats.Count -ge 2) { $first = $stats[0].Value $last = $stats[-1].Value $deltaKb = $last - $first $dailyDeltaGb = ($deltaKb / 1MB) / 7 $growthRate = [Math]::Round($dailyDeltaGb, 2) if ($growthRate -gt 0) { $days = [Math]::Round($freeGb / $growthRate) } } else { Write-Warning "Insufficient history (< 2 data points) for datastore $($ds.Name)." } [PSCustomObject]@{ PSTypeName = 'AnyStack.DatastoreGrowthRate' Timestamp = (Get-Date) Server = $vi.Name DatastoreName = $ds.Name CurrentFreeGB = $freeGb TotalGB = [Math]::Round($ds.Summary.Capacity / 1GB, 2) GrowthRateGB_per_Day = $growthRate DaysUntilFull = $days } } } catch { $PSCmdlet.ThrowTerminatingError([System.Management.Automation.ErrorRecord]::new($_, 'UnexpectedError', [System.Management.Automation.ErrorCategory]::NotSpecified, $null)) } } } |