functions/Test-DbaDiskAllocation.ps1
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function Test-DbaDiskAllocation { <# .SYNOPSIS Checks all disks on a computer to see if they are formatted with allocation units of 64KB. .DESCRIPTION Checks all disks on a computer for disk allocation units that match best practice recommendations. If one server is checked, only $true or $false is returned. If multiple servers are checked, each server's name and an IsBestPractice field are returned. Specify -Detailed for details. References: https://technet.microsoft.com/en-us/library/dd758814(v=sql.100).aspx - "The performance question here is usually not one of correlation per the formula, but whether the cluster size ..has been explicitly defined at 64 KB, which is a best practice for SQL Server." http://tk.azurewebsites.net/2012/08/ .PARAMETER ComputerName The server(s) to check disk configuration on. .PARAMETER NoSqlCheck If this switch is enabled, the disk(s) will not be checked for SQL Server data or log files. .PARAMETER SqlCredential If you want to use SQL Server Authentication to connect. .PARAMETER Detailed If this switch is enabled, detailed output is produced. .PARAMETER WhatIf If this switch is enabled, no actions are performed but informational messages will be displayed that explain what would happen if the command were to run. .PARAMETER Confirm If this switch is enabled, you will be prompted for confirmation before executing any operations that change state. .PARAMETER Silent If this switch is enabled, the internal messaging functions will be silenced. .NOTES Tags: CIM, Storage Requires: Windows sysadmin access on SQL Servers dbatools PowerShell module (https://dbatools.io, clemaire@gmail.com) Copyright (C) 2016 Chrissy LeMaire License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0 .LINK https://dbatools.io/Test-DbaDiskAllocation .EXAMPLE Test-DbaDiskAllocation -ComputerName sqlserver2014a Scans all disks on server sqlserver2014a for best practice allocation unit size. .EXAMPLE Test-DbaDiskAllocation -ComputerName sqlserver2014 -Detailed Scans all disks on server sqlserver2014a for allocation unit size and returns detailed results for each. .EXAMPLE Test-DbaDiskAllocation -ComputerName sqlserver2014a -NoSqlCheck Scans all disks not hosting SQL Server data or log files on server sqlserver2014a for best practice allocation unit size. #> [CmdletBinding(SupportsShouldProcess = $true)] [OutputType("System.Collections.ArrayList", "System.Boolean")] Param ( [parameter(Mandatory = $true, ValueFromPipeline = $true)] [Alias("ServerInstance", "SqlServer", "SqlInstance")] [object[]]$ComputerName, [switch]$NoSqlCheck, [object]$SqlCredential, [switch]$Detailed, [switch]$Silent ) begin { if ($Detailed) { Write-Message -Level Warning -Message "Detailed is deprecated and will be removed in dbatools 1.0." } $sessionoptions = New-CimSessionOption -Protocol DCOM function Get-AllDiskAllocation { $alldisks = @() $SqlInstances = @() try { Write-Message -Level Verbose -Message "Getting disk information from $computer." # $query = "Select Label, BlockSize, Name from Win32_Volume WHERE FileSystem='NTFS'" # $disks = Get-WmiObject -ComputerName $ipaddr -Query $query | Sort-Object -Property Name $disks = Get-CimInstance -CimSession $CIMsession -ClassName win32_volume -Filter "FileSystem='NTFS'" -ErrorAction Stop | Sort-Object -Property Name } catch { Stop-Function -Message "Can't connect to WMI on $computer." return } if ($NoSqlCheck -eq $false) { Write-Message -Level Verbose -Message "Checking for SQL Services" $sqlservices = Get-Service -ComputerName $ipaddr | Where-Object { $_.DisplayName -like 'SQL Server (*' } foreach ($service in $sqlservices) { $instance = $service.DisplayName.Replace('SQL Server (', '') $instance = $instance.TrimEnd(')') $instancename = $instance.Replace("MSSQLSERVER", "Default") Write-Message -Level Verbose -Message "Found instance $instancename." if ($instance -eq 'MSSQLSERVER') { $SqlInstances += $ipaddr } else { $SqlInstances += "$ipaddr\$instance" } } $sqlcount = $SqlInstances.Count Write-Message -Level Verbose -Message "$sqlcount instance(s) found." } foreach ($disk in $disks) { if (!$disk.name.StartsWith("\\")) { $diskname = $disk.Name if ($NoSqlCheck -eq $false) { $sqldisk = $false foreach ($SqlInstance in $SqlInstances) { Write-Message -Level Verbose -Message "Connecting to SQL instance ($SqlInstance)." try { $smoserver = Connect-SqlInstance -SqlInstance $SqlInstance -SqlCredential $SqlCredential $sql = "Select count(*) as Count from sys.master_files where physical_name like '$diskname%'" $sqlcount = $smoserver.Databases['master'].ExecuteWithResults($sql).Tables[0].Count if ($sqlcount -gt 0) { $sqldisk = $true break } } catch { Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue continue } } } if ($disk.BlockSize -eq 65536) { $IsBestPractice = $true } else { $IsBestPractice = $false } $windowsdrive = "$env:SystemDrive\" if ($diskname -eq $windowsdrive) { $IsBestPractice = $false } if ($NoSqlCheck -eq $false) { $alldisks += [PSCustomObject]@{ Server = $computer Name = $diskname Label = $disk.Label BlockSize = $disk.BlockSize IsSqlDisk = $sqldisk IsBestPractice = $IsBestPractice } } else { $alldisks += [PSCustomObject]@{ Server = $computer Name = $diskname Label = $disk.Label BlockSize = $disk.BlockSize IsBestPractice = $IsBestPractice } } } } return $alldisks } } process { foreach ($computer in $ComputerName) { $computer = Resolve-DbaNetworkName -ComputerName $computer -Credential $credential $ipaddr = $computer.IpAddress $Computer = $computer.ComputerName if (!$Computer) { Stop-Function -Message "Couldn't resolve hostname. Skipping." -Continue } Write-Message -Level Verbose -Message "Creating CimSession on $computer over WSMan." if (!$Credential) { $cimsession = New-CimSession -ComputerName $Computer -ErrorAction SilentlyContinue } else { $cimsession = New-CimSession -ComputerName $Computer -ErrorAction SilentlyContinue -Credential $Credential } if ($null -eq $cimsession.id) { Write-Message -Level Verbose -Message "Creating CimSession on $computer over WSMan failed. Creating CimSession on $computer over DCOM." if (!$Credential) { $cimsession = New-CimSession -ComputerName $Computer -SessionOption $sessionoption -ErrorAction SilentlyContinue -Credential $Credential } else { $cimsession = New-CimSession -ComputerName $Computer -SessionOption $sessionoption -ErrorAction SilentlyContinue } } if ($null -eq $cimsession.id) { Stop-Function -Message "Can't create CimSession on $computer" -Target $Computer } Write-Message -Level Verbose -Message "Getting Power Plan information from $Computer" $data = Get-AllDiskAllocation $computer if ($data.Count -gt 1) { $data.GetEnumerator() } else { $data } } } } |