function Disconnect-GpfsServer {
    [CmdletBinding()]
    param()

    if (-not $script:GpfsSession) {
        Write-Warning 'No active GPFS session.'
        return
    }

    $server = $script:GpfsSession.Server
    $script:GpfsSession = $null
    Write-Host "Disconnected from GPFS server: $server" -ForegroundColor Yellow
}