HTTP 507 Insufficient Storage

What is HTTP 507 Insufficient Storage?

The 507 (Insufficient Storage) status code indicates that the method could not be performed on the resource because the server is unable to store the representation needed to successfully complete the request. This is commonly used in WebDAV but also applies to any server that runs out of disk space.

Common Use Cases

• Disk space exhaustion
• Storage quota exceeded
• WebDAV quota limits

// Laravel - checking storage limits
$disk = Storage::disk('local');
$maxBytes = 500 * 1024 * 1024; // 500MB quota
$usedBytes = $disk->size('/user-uploads/' . $user->id);

if ($usedBytes + $uploadSize > $maxBytes) {
    return response()->json([
        'error' => 'Storage quota exceeded',
        'quota_mb' => 500,
        'used_mb' => round($usedBytes / 1024 / 1024, 2),
    ], 507);
}