diff --git a/netbox_agent/inventory.py b/netbox_agent/inventory.py
index 4a1fd65..70dc49b 100644
--- a/netbox_agent/inventory.py
+++ b/netbox_agent/inventory.py
@@ -1,3 +1,4 @@
+import logging
 import subprocess
 import re
 
@@ -86,7 +87,7 @@ class Inventory():
 
         controllers = self.raid.get_controllers()
         if len(self.raid.get_controllers()):
-            return self.raid.get_controllers()
+            return controllers
 
     def get_netbox_raid_cards(self):
         raid_cards = nb.dcim.inventory_items.filter(
@@ -97,7 +98,7 @@ class Inventory():
 
     def find_or_create_manufacturer(self, name):
         if name is None:
-            return none
+            return None
         manufacturer = nb.dcim.manufacturers.get(
             name=name,
         )
@@ -115,7 +116,7 @@ class Inventory():
         nb_raid_card = nb.dcim.inventory_items.create(
             device=self.device_id,
             discovered=True,
-            manufacturer=manufacturer.id,
+            manufacturer=manufacturer.id if manufacturer else None,
             tags=[INVENTORY_TAG['raid_card']['name']],
             name='{}'.format(raid_card.get_product_name()),
             serial='{}'.format(raid_card.get_serial_number()),
@@ -151,16 +152,48 @@ class Inventory():
                 self.create_netbox_raid_card(raid_card)
 
     def get_disks(self):
-        pass
+        ret = []
+        for raid_card in self.get_raid_cards():
+            ret += raid_card.get_physical_disks()
+        return ret
 
     def get_netbox_disks(self):
-        pass
+        disks = nb.dcim.inventory_items.filter(
+            device_id=self.device_id,
+            tag=INVENTORY_TAG['disk']['slug'],
+            )
+        return disks
 
     def create_netbox_disks(self):
-        pass
+        for disk in self.get_disks():
+            disk = nb.dcim.inventory_items.create(
+                device=self.device_id,
+                discovered=True,
+                tags=[INVENTORY_TAG['disk']['name']],
+                name='{} ({})'.format(disk['Model'], disk['Size']),
+                serial=disk['SN'],
+            )
 
     def update_netbox_disks(self):
-        pass
+        nb_disks = self.get_netbox_disks()
+        disks = self.get_disks()
+
+        # delete disks that are in netbox but not locally
+        # use the serial_number has the comparison element
+        for nb_disk in nb_disks:
+            if nb_disk.serial not in [x['SN'] for x in disks]:
+                nb_disk.delete()
+
+        # create disks that are not in netbox
+        for disk in disks:
+            if disk['SN'] not in [x.serial for x in nb_disks]:
+                disk = nb.dcim.inventory_items.create(
+                    device=self.device_id,
+                    discovered=True,
+                    tags=[INVENTORY_TAG['disk']['name']],
+                    name='{} ({})'.format(disk['Model'], disk['Size']),
+                    serial=disk['SN'],
+                )
 
     def get_memory(self):
         memories = []
@@ -221,3 +254,4 @@ class Inventory():
         # assume we don't update CPU?
         self.update_netbox_memory()
         self.update_netbox_raid_cards()
+        self.update_netbox_disks()
diff --git a/netbox_agent/raid/dell.py b/netbox_agent/raid/dell.py
index deb6b61..97697a8 100644
--- a/netbox_agent/raid/dell.py
+++ b/netbox_agent/raid/dell.py
@@ -4,8 +4,9 @@ import json
 from netbox_agent.raid.base import Raid, RaidController
 
 class StorcliController(RaidController):
-    def __init__(self, data):
+    def __init__(self, controller_index, data):
         self.data = data
+        self.controller_index = controller_index
 
     def get_product_name(self):
         return self.data['Product Name']
@@ -19,6 +20,25 @@ class StorcliController(RaidController):
     def get_firmware_version(self):
         return self.data['FW Package Build']
 
+    def get_physical_disks(self):
+        ret = []
+        output = subprocess.getoutput('storcli /c{}/eall/sall show all J'.format(self.controller_index))
+        drive_infos = json.loads(output)['Controllers'][self.controller_index]['Response Data']
+
+        for physical_drive in self.data['PD LIST']:
+            enclosure = physical_drive.get('EID:Slt').split(':')[0]
+            slot = physical_drive.get('EID:Slt').split(':')[1]
+            size = physical_drive.get('Size').strip()
+            drive_identifier = 'Drive /c{}/e{}/s{}'.format(str(self.controller_index), str(enclosure), str(slot))
+            drive_attr = drive_infos['{} - Detailed Information'.format(drive_identifier)]\
+                         ['{} Device attributes'.format(drive_identifier)]
+            ret.append({
+                'Model': drive_attr.get('Model Number', '').strip(),
+                'SN': drive_attr.get('SN', '').strip(),
+                'Size': size,
+                })
+        return ret
+
 class StorcliRaid(Raid):
     def __init__(self):
         self.output = subprocess.getoutput('storcli /call show J')
@@ -31,7 +51,10 @@ class StorcliRaid(Raid):
         ]) > 0:
             for controller in self.data['Controllers']:
                 self.controllers.append(
-                    StorcliController(controller['Response Data'])
+                    StorcliController(
+                        controller['Command Status']['Controller'],
+                        controller['Response Data']
+                    )
                 )
 
     def get_controllers(self):
diff --git a/netbox_agent/server.py b/netbox_agent/server.py
index c3c6363..11f5b03 100644
--- a/netbox_agent/server.py
+++ b/netbox_agent/server.py
@@ -282,12 +282,12 @@ class ServerBase():
         logging.debug('Finished updating Server!')
 
     def print_debug(self):
+        self.inventory = Inventory(server=self)
         # FIXME: do something more generic by looping on every get_* methods
         print(self.inventory.get_memory())
         print(self.inventory.get_raid_cards())
         print(self.inventory.get_netbox_raid_cards())
-# print(self.inventory.get_netbox_memory())
-# print(self.inventory.update_netbox_memory())
+        print(self.inventory.get_disks())
         return
         print('Datacenter:', self.get_datacenter())
         print('Netbox Datacenter:', self.get_netbox_datacenter())