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 Server : 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, currend 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 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 sqlserver2016a Will fill this in .EXAMPLE Measure-DbaBackupThroughput -SqlInstance sqlserver2016a -Databases db1 Will fill this in .EXAMPLE Measure-DbaBackupThroughput -SqlInstance sql2005 -Last Full .EXAMPLE Measure-DbaBackupThroughput -SqlInstance sql2005 -Last -Type Log .EXAMPLE Measure-DbaBackupThroughput -SqlInstance sql2005 -Last -Type Log .EXAMPLE Measure-DbaBackupThroughput -SqlInstance sql2016 -Since (Get-Date).AddDays(-7) Gets info for last week .EXAMPLE Measure-DbaBackupThroughput -SqlInstance sql2016 -Since (Get-Date).AddDays(-365) -Databases bigoldb Will fill this in #> [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 $database -Last:$last -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 += $history | Select-Object Server, Database, MBps, TotalSizeMB, Start, End } foreach ($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]@{ Server = $db.Group.Server | 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 } } } } } } |