Use PowerShell to Determine the Uptime of an EqualLogic SAN

Recently, I received notification from EqualLogic support that there could be issues with their storage area networks running firmware version 7.0.x at 248 consecutive days of uninterrupted operation and they recommend updating to firmware version 7.0.9 to correct (and prevent) the problem.

While I know that I have EqualLogic storage area networks running in some of the data-centers I support, I'm not sure what version of firmware they're running or what the uptime on them is so I'll use PowerShell (of course) to determine this information.

The EqlPSTools PowerShell module is part of the EqualLogic HIT (Host Integration Tools) Kit for Microsoft which can be downloaded from the EqualLogic support site. Note that the support site states that customers must have an active service plan to gain access to it.

I decided to write a reusable function to perform the necessary tasks since the EqlPSTools module is in a DLL file that has to be manually imported and you would normally have to connect to each SAN, query it and them disconnect from it moving on to the next one.

I didn't want to have to figure all of that out each time I needed to determine this information so I decided to write a function that would do all of that for me. I could even add it to a script module that exists in my $env:PSModulePath so it would automatically be available any time I needed it without having to find and dot source a ps1 file.

  1#Requires -Version 3.0
  2function Get-MrEqlSANUptime {
  6    Gets the uptime for one or more EqualLogic storage area network members.
  9    Get-MrEqlSANUptime is a PowerShell function that retrieves the firmware
 10    version, last boot time, and number of days of uptime from one or more
 11    EqualLogic storage area network members. This function depends on the
 12    EqlPSTools PowerShell module that is installed as part of the EqualLogic
 13    HIT Kit.
 15.PARAMETER GroupAddress
 16    One or more IP Addresses of the EqualLogic storage area network(s) to
 17    return the uptime information for.
 19.PARAMETER ModulePath
 20    Full path to the EqlPSTools.dll file that is installed as part of the
 21    EqualLogic HIT Kit. This parameter defaults to the default location of
 22    this DLL file.
 24.PARAMETER Credential
 25    Specifies a user account that has permission to perform this action. The
 26    default is the current user.
 29     Get-MrEqlSANUptime -GroupAddress -Credential (Get-Credential)
 32     Get-MrEqlSANUptime -GroupAddress -ModulePath 'C:\Program Files\EqualLogic\bin\EqlPSTools.dll'
 35     '', '' | Get-MrEqlSANUptime -Credential (Get-Credential)
 38    String
 41    PSCustomObject
 44    Author:  Mike F Robbins
 45    Website:
 46    Twitter: @mikefrobbins
 49    [CmdletBinding()]
 50    param (
 51        [Parameter(Mandatory,
 52                   ValueFromPipeline)]
 53        [string[]]$GroupAddress,
 55        [ValidateNotNullOrEmpty()]
 56        [string]$ModulePath = 'C:\Program Files\EqualLogic\bin\EqlPSTools.dll',
 58        [System.Management.Automation.Credential()]$Credential = [System.Management.Automation.PSCredential]::Empty
 59    )
 61    BEGIN {
 62        $problem = $false
 64        $Params = @{
 65            ErrorAction = 'Stop'
 66        }
 68        Write-Verbose -Message "Attempting to load EqlPSTools Module if it's not already loaded"
 69        if (-not (Get-Module -Name EqlPSTools)) {
 70            try {
 71                Import-Module $ModulePath @Params
 72            }
 73            catch {
 74                $problem = $true
 75                Write-Warning -Message "An error has occured.  Error details: $_.Exception.Message"
 76            }
 77        }
 79        If ($PSBoundParameters['Credential']) {
 80            $Params.credential = $Credential
 81        }
 82    }
 84    PROCESS {
 85        if (-not ($problem)) {
 86            foreach ($Group in $GroupAddress) {
 87                $Params.GroupAddress = $Group
 89                try {
 90                    $Connect = Connect-EqlGroup @Params
 91                    Write-Verbose -Message "$Connect"
 92                }
 93                catch {
 94                    $Problem = $True
 95                    Write-Warning -Message "Please contact your system administrator. Reference error: $_.Exception.Message"
 96                }
 98                if (-not($Problem)) {
 99                    Get-EqlMember -GroupAddress $Group |
100                    Select-Object -Property MemberName,
101                                            @{label='FirmwareVersion';expression={$_.FirmwareVersion -replace '^.*V'}},
102                                            @{label='BootTime';expression={(Get-Date).AddSeconds(-$_.Uptime)}},
103                                            @{label='UpTime(Days)';expression={'{0:N2}' -f ($_.UpTime / 86400) }}
105                    $Disconnect = Disconnect-EqlGroup -GroupAddress $Group
106                    Write-Verbose -Message "$Disconnect"
107                }
109                $Problem = $false
110            }
111        }
112    }

The Get-EqlMember cmdlet which is part of the EqlPSTools PowerShell module returns an uptime property, but it's in total seconds and I'm not sure about you but a number like 12801888 doesn't mean much to me without performing some additional calculations on it and I wanted the function to do all of that for me (automate all things):

1Get-MrEqlSANUptime -GroupAddress, -Credential (Get-Credential)


The Get-EqlMember cmdlet only accepts a single IP address via parameter input and it can't be provided via pipeline input so I would have had to query the SAN in each data-center manually, one at a time or write some code to put them into a ForEach-Object loop.

I wrote my reusable function so it would not only allow multiple IP addresses to be provided via parameter input, but also accept them via pipeline input in case I wanted to query the actual IP addresses from somewhere else like a text file or CSV and then provide that output as input for my function:

1$cred= Get-Credential
2'', '', '' | Get-MrEqlSANUptime -Credential $cred


Based on the previous results, the reported issue isn't a crisis at the moment, but it's something that needs to be taken care of in less than 100 days and I can see there are a couple more that need to have their firmware updated that are on older versions.

The Get-EqlSANUptime PowerShell function shown in this blog article can be downloaded from my PowerShell Repository on GitHub.