Mailbox VSS Writer health check

[notevenahint57]

There's a bug in this script where it tries to write to the $error variable. This is a reserved powershell variable, so it needs to be changed to something else.

So change this block:
if ( $writerName -like "Microsoft Exchange*" ) {
$state = $writers[ $lineNum + 3 ].trim()
$error = $writers[ $lineNum + 4 ].trim()
Add-Member -InputObject $px -MemberType NoteProperty -Name "State" -Value $state.substring( 7, $state.length-7 )
Add-Member -InputObject $px -MemberType NoteProperty -Name "Error" -Value $error.substring( 12, $error.length-12 )

                # add the resulting object to the array holding all the data
                $allVSSWritersList += $px

                # reset the results object for the next writer
                $px = NewVSSObject -Server $server

}

To this:
if ( $writerName -like "Microsoft Exchange*" ) {
$state = $writers[ $lineNum + 3 ].trim()
$vsserror = $writers[ $lineNum + 4 ].trim()
Add-Member -InputObject $px -MemberType NoteProperty -Name "State" -Value $state.substring( 7, $state.length-7 )
Add-Member -InputObject $px -MemberType NoteProperty -Name "Error" -Value $vsserror.substring( 12, $vsserror.length-12 )

                # add the resulting object to the array holding all the data
                $allVSSWritersList += $px

                # reset the results object for the next writer
                $px = NewVSSObject -Server $server
            }

Also, an alternative to the Invoke-Command call, you can use psexec, such as:
$writers = $( & $pathtoPSExec "$server" -accepteula -h vssadmin list writers) -split "nr"

[notevenahint57]

Slight change to the line that pulls the writers if you want to use psexec. This stops output from running psexec to print to the console

$writers = $(cmd /c $pathtoPSExec "$server" -accepteula -h vssadmin list writers 2>&1) -split "nr"