functions/Measure-DbaBackupThroughput.ps1
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function Measure-DbaBackupThroughput { <# .SYNOPSIS Determines how quickly SQL Server is backing up databases to media. .DESCRIPTION Returns backup history details for some or all databases on a SQL Server. Output looks like this SqlInstance : sql2016 Database : SharePoint_Config AvgThroughputMB : 1.07 AvgSizeMB : 24.17 AvgDuration : 00:00:01.1000000 MinThroughputMB : 0.02 MaxThroughputMB : 2.26 MinBackupDate : 8/6/2015 10:22:01 PM MaxBackupDate : 6/19/2016 12:57:45 PM BackupCount : 10 .PARAMETER SqlInstance SqlInstance name or SMO object representing the SQL Server to connect to. This can be a collection and receive pipeline input. .PARAMETER SqlCredential PSCredential object to connect as. If not specified, current Windows login will be used. .PARAMETER Database The database(s) to process - this list is auto-populated from the server. If unspecified, all databases will be processed. .PARAMETER ExcludeDatabase The database(s) to exclude - this list is auto-populated from the server .PARAMETER Type By default, this command measures the speed of Full backups. You can also specify Log or Differential. .PARAMETER Since Datetime object used to narrow the results to a date .PARAMETER Last Measure only the last backup .PARAMETER DeviceType Filters the backup set by this DeviceType. It takes well-known types ('Disk','Permanent Disk Device', 'Tape', 'Permanent Tape Device','Pipe','Permanent Pipe Device','Virtual Device') as well as custom integers (bring your own types) .PARAMETER Silent Replaces user friendly yellow warnings with bloody red exceptions of doom! Use this if you want the function to throw terminating errors you want to catch. .NOTES Tags: DisasterRecovery, Backup, Databases Website: https://dbatools.io Copyright: (C) Chrissy LeMaire, clemaire@gmail.com License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0 .LINK https://dbatools.io/Measure-DbaBackupThroughput .EXAMPLE Measure-DbaBackupThroughput -SqlInstance sql2016 Parses every backup in msdb's backuphistory for stats on all databases .EXAMPLE Measure-DbaBackupThroughput -SqlInstance sql2016 -Database AdventureWorks2014 Parses every backup in msdb's backuphistory for stats on AdventureWorks2014 .EXAMPLE Measure-DbaBackupThroughput -SqlInstance sql2005 -Last Processes the last full, diff and log backups every backup for all databases on sql2005 .EXAMPLE Measure-DbaBackupThroughput -SqlInstance sql2005 -Last -Type Log Processes the last log backups every backup for all databases on sql2005 .EXAMPLE Measure-DbaBackupThroughput -SqlInstance sql2016 -Since (Get-Date).AddDays(-7) Gets backup calculations for the last week .EXAMPLE Measure-DbaBackupThroughput -SqlInstance sql2016 -Since (Get-Date).AddDays(-365) -Database bigoldb Gets backup calculations, limited to the last year and only the bigoldb database #> [CmdletBinding()] param ( [parameter(Position = 0, Mandatory = $true, ValueFromPipeline = $True)] [Alias("ServerInstance", "Instance", "SqlServer")] [DbaInstanceParameter[]]$SqlInstance, [Alias("Credential")] [PSCredential] $SqlCredential, [Alias("Databases")] [object[]]$Database, [object[]]$ExcludeDatabase, [datetime]$Since, [switch]$Last, [ValidateSet("Full", "Log", "Differential", "File", "Differential File", "Partial Full", "Partial Differential")] [string]$Type = "Full", [string[]]$DeviceType, [switch]$Silent ) process { foreach ($instance in $SqlInstance) { try { Write-Message -Level Verbose -Message "Connecting to $instance" $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $sqlcredential } catch { Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue } if ($Database) { $DatabaseCollection = $server.Databases | Where-Object Name -in $Database } else { $DatabaseCollection = $server.Databases } if ($ExcludeDatabase) { $DatabaseCollection = $DatabaseCollection | Where-Object Name -NotIn $ExcludeDatabase } foreach ($db in $DatabaseCollection) { Write-Message -Level VeryVerbose -Message "Retrieving history for $db" $allhistory = @() # Splatting didn't work if ($since) { $histories = Get-DbaBackupHistory -SqlInstance $server -Database $db -Since $since -DeviceType $DeviceType | Where-Object Type -eq $Type } else { $histories = Get-DbaBackupHistory -SqlInstance $server -Database $db -Last:$last -DeviceType $DeviceType | Where-Object Type -eq $Type } foreach ($history in $histories) { $timetaken = New-TimeSpan -Start $history.Start -End $history.End if ($timetaken.TotalMilliseconds -eq 0) { $throughput = $history.TotalSize.Megabyte } else { $throughput = $history.TotalSize.Megabyte / $timetaken.TotalSeconds } Add-Member -Force -InputObject $history -MemberType Noteproperty -Name MBps -value $throughput $allhistory += $history | Select-Object ComputerName, InstanceName, SqlInstance, Database, MBps, TotalSize, Start, End } Write-Message -Level VeryVerbose -Message "Calculating averages for $db" foreach ($db in ($allhistory | Sort-Object Database | Group-Object Database)) { $measuremb = $db.Group.MBps | Measure-Object -Average -Minimum -Maximum $measurestart = $db.Group.Start | Measure-Object -Minimum $measureend = $db.Group.End | Measure-Object -Maximum $measuresize = $db.Group.TotalSize.Megabyte | Measure-Object -Average $avgduration = $db.Group | ForEach-Object { New-TimeSpan -Start $_.Start -End $_.End } | Measure-Object -Average TotalSeconds [pscustomobject]@{ ComputerName = $db.Group.ComputerName | Select-Object -First 1 InstanceName = $db.Group.InstanceName | Select-Object -First 1 SqlInstance = $db.Group.SqlInstance | Select-Object -First 1 Database = $db.Name AvgThroughputMB = [System.Math]::Round($measuremb.Average, 2) AvgSizeMB = [System.Math]::Round($measuresize.Average, 2) AvgDuration = [dbatimespan](New-TimeSpan -Seconds $avgduration.Average) MinThroughputMB = [System.Math]::Round($measuremb.Minimum, 2) MaxThroughputMB = [System.Math]::Round($measuremb.Maximum, 2) MinBackupDate = [dbadatetime]$measurestart.Minimum MaxBackupDate = [dbadatetime]$measureend.Maximum BackupCount = $db.Count } | Select-DefaultView -ExcludeProperty ComputerName, InstanceName } } } } } |