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 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 .NOTES Tags: DisasterRecovery, Backup dbatools PowerShell module (https://dbatools.io, clemaire@gmail.com) Copyright (C) 2016 Chrissy LeMaire This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. .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 -Databases 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) -Databases bigoldb Gets backup calculations, limited to the last year and only the bigoldb database #> [CmdletBinding()] param ( [parameter(Position = 0, Mandatory = $true, ValueFromPipeline = $True)] [Alias("ServerInstance", "Instance", "SqlServer")] [object[]]$SqlInstance, [PSCredential][System.Management.Automation.CredentialAttribute()]$SqlCredential, [datetime]$Since, [switch]$Last, [ValidateSet("Full", "Log", "Differential")] [string]$Type = "Full" ) DynamicParam { if ($SqlInstance) { return Get-ParamSqlDatabases -SqlServer $SqlInstance[0] -SqlCredential $SqlCredential } } BEGIN { $databases = $psboundparameters.Databases if ($Since) { $Since = $Since.ToString("yyyy-MM-dd HH:mm:ss") } } process { foreach ($instance in $SqlInstance) { try { Write-Verbose "Connecting to $instance" $server = Connect-SqlServer -SqlServer $instance -SqlCredential $sqlcredential } catch { Write-Warning "Failed to connect to $instance" continue } if (!$databases) { $databases = $server.databases.name } foreach ($database in $databases) { Write-Verbose "Getting backup history for $database" $allhistory = @() # Splatting didnt work if ($since) { $histories = Get-DbaBackupHistory -SqlServer $server -Databases $database -Since $since | Where-Object Type -eq $Type } else { $histories = Get-DbaBackupHistory -SqlServer $server -Databases $database -Last:$last | 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.TotalSizeMB } else { $throughput = $history.TotalSizeMB % $timetaken.TotalSeconds + 1 } Add-Member -InputObject $history -MemberType Noteproperty -Name MBps -value $throughput $allhistory += $history | Select-Object ComputerName, InstanceName, SqlInstance, Database, MBps, TotalSizeMB, Start, End } foreach ($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.TotalSizeMB | Measure-Object -Average $avgduration = $db.Group | ForEach-Object { New-TimeSpan -Start $_.Start -End $_.End } | Measure-Object -Average TotalSeconds $date = Get-Date [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 = New-TimeSpan -Start $date -End $date.AddSeconds($avgduration.Average) MinThroughputMB = [System.Math]::Round($measuremb.Minimum, 2) MaxThroughputMB = [System.Math]::Round($measuremb.Maximum, 2) MinBackupDate = $measurestart.Minimum MaxBackupDate = $measureend.Maximum BackupCount = $db.Count } | Select-DefaultView -ExcludeProperty ComputerName, InstanceName } } } } } |