speed d drive

speed_d.ps1

# Test C: drive speed with DiskSpd (fixed arg passing)

# --- Settings ---
$diskspdUrl = "https://github.com/microsoft/diskspd/releases/download/v2.2/DiskSpd.ZIP"
$diskspdExe = "$env:TEMP\diskspd.exe"
$tempFile   = "D:\diskspd_testfile.dat"   # test file now on D:
$outFile    = "$env:TEMP\diskspd_results.txt"

$fileSize = "1G"    # test file size
$duration = 30      # seconds
$threads  = 4

# --- Download DISKSPD if not found ---
if (-not (Test-Path $diskspdExe)) {
    Write-Host "Downloading DISKSPD..."
    $zip = Join-Path $env:TEMP "diskspd.zip"
    Invoke-WebRequest -Uri $diskspdUrl -OutFile $zip

    Expand-Archive -Path $zip -DestinationPath $env:TEMP -Force
    Remove-Item $zip -Force

    # Find the right exe (prefer amd64/x64)
    $exeFound = Get-ChildItem -Path $env:TEMP -Filter "diskspd.exe" -Recurse |
                Sort-Object { if ($_.FullName -match 'amd64|x64') {0} else {1} } |
                Select-Object -First 1
    if ($exeFound) {
        Copy-Item $exeFound.FullName $diskspdExe -Force
    } else {
        Write-Error "DISKSPD executable not found after extraction."
        exit 1
    }
}

# --- Run Test ---
Write-Host "Running DISKSPD test on C: drive..."

# Build argument list explicitly so variables interpolate correctly
$args = @(
    "-c$($fileSize)"
    "-d$($duration)"
    "-Sh"
    "-L"
    "-b64K"
    "-t$($threads)"
    "-o4"
    "-w50"
    $tempFile
)

try {
    & $diskspdExe @args | Tee-Object -FilePath $outFile
    $code = $LASTEXITCODE
}
finally {
    if (Test-Path $tempFile) { Remove-Item $tempFile -Force }
}

Write-Host "`n=== DISKSPD Results ==="
if (Test-Path $outFile) {
    Get-Content $outFile
} else {
    Write-Warning "No results file was produced (DiskSpd likely failed before writing output)."
}

if ($code) { exit $code } else { exit 0 }