wwn should always be lowercase for consistency. It's used in the URL for pushing smart data.

collector/pkg/detect/detect.go

@@ -100,7 +100,7 @@ func (d *Detect) smartCtlInfo(device *models.Device) error {
 			Oui: availableDeviceInfo.Wwn.Oui,
 			Id:  availableDeviceInfo.Wwn.ID,
 		}
-		device.WWN = wwn.ToString()
+		device.WWN = strings.ToLower(wwn.ToString())
 		d.Logger.Debugf("NAA: %d OUI: %d Id: %d => WWN: %s", wwn.Naa, wwn.Oui, wwn.Id, device.WWN)
 	} else {
 		d.Logger.Info("Using WWN Fallback")

collector/pkg/detect/devices_darwin.go

@@ -105,4 +105,7 @@ func (d *Detect) wwnFallback(detectedDevice *models.Device) {
 		d.Logger.Debugf("WWN is empty, falling back to serial number: %s", detectedDevice.SerialNumber)
 		detectedDevice.WWN = detectedDevice.SerialNumber
 	}
+
+	//wwn must always be lowercase.
+	detectedDevice.WWN = strings.ToLower(detectedDevice.WWN)
 }

collector/pkg/detect/devices_linux.go

@@ -42,4 +42,7 @@ func (d *Detect) wwnFallback(detectedDevice *models.Device) {
 		d.Logger.Debugf("WWN is empty, falling back to serial number: %s", detectedDevice.SerialNumber)
 		detectedDevice.WWN = detectedDevice.SerialNumber
 	}
+
+	//wwn must always be lowercase.
+	detectedDevice.WWN = strings.ToLower(detectedDevice.WWN)
 }

collector/pkg/detect/devices_windows.go

@@ -26,4 +26,7 @@ func (d *Detect) wwnFallback(detectedDevice *models.Device) {
 	if len(detectedDevice.WWN) == 0 {
 		detectedDevice.WWN = detectedDevice.SerialNumber
 	}
+
+	//wwn must always be lowercase.
+	detectedDevice.WWN = strings.ToLower(detectedDevice.WWN)
 }

collector/pkg/detect/wwn.go

@@ -2,6 +2,7 @@ package detect
 
 import (
 	"fmt"
+	"strings"
 )
 
 type Wwn struct {
@@ -54,5 +55,5 @@ func (wwn *Wwn) ToString() string {
 
 	//TODO: may need to support additional versions in the future.
 
-	return fmt.Sprintf("%#x", wwnBuffer)
+	return strings.ToLower(fmt.Sprintf("%#x", wwnBuffer))
 }