diff --git a/xymon/plugins/client/ext/smart b/xymon/plugins/client/ext/smart
index dcb3411..b26421b 100755
--- a/xymon/plugins/client/ext/smart
+++ b/xymon/plugins/client/ext/smart
@@ -13,6 +13,7 @@ use Data::Dumper;
 
 my $bb = new Hobbit('smart');
 
+my $temp_disk_list = "/tmp/smart.drivedb.list";
 my @disks = ();
 my %olderr = {};
 
@@ -21,9 +22,14 @@ my $CACHEFILE = "$ENV{'XYMONTMP'}/$ENV{'MACHINEDOTS'}.smart.cache";
 
 &load_config("$ENV{'XYMONTMP'}/logfetch.$ENV{'MACHINEDOTS'}.cfg");
 
-# Create a file with the list of disks
-system("ls -1 /dev/sd* > /tmp/smart.drivedb.list") == 0
-    or die "system command to create smart.drivedb.list failed: $?";
+if (-e $temp_disk_list) {
+    # Should use the existing file
+}
+else {
+    # Create a file with the list of disks
+    system("ls -1 /dev/sd* | grep -vE '[0-9]' > /tmp/smart.drivedb.list") == 0
+        or die "system command to create smart.drivedb.list failed: $?";
+}
 
 # fallback to disk detection if nothing defined in the config
 unless (@disks) {