Checking Whether a Disk Enclosure Has Only One Link

Procedure

1. Check whether a mini SAS cable and an expansion module are removed or faulty.
   • If yes, go to step 2.
   • If no, go to step 3.

2. Reinsert or replace the mini SAS cable and the expansion module, and then log in to the DeviceManager and check whether the alarm is cleared.
   • If yes, no further action is required.
   • If no, go to step 3.

3. Replace an expansion module.
   NOTE:

   For details about how to replacing an expansion module

   • 18500 V3&18800 V3, see section Replacing an Expansion Module in the OceanStor 18500 V3&18800 V3 Mission Critical Storage System V300R003 Product Documentation.
   • 2200 V3&2600 V3&5300 V3&5500 V3&5600 V3&5800 V3&6800 V3, see section Replacing an Expansion Module in the OceanStor 5300 V3&5500 V3&5600 V3&5800 V3&6800 V3 Storage System V300R003 Product Documentation or OceanStor 2200 V3&2600 V3 Storage System V300R005 Product Documentation. The method used to replace expansion module is the same for V300R003 and V300R005. V300R003 is used as an example to describe how to replace an expansion module, see
     • Disk Enclosure Replacing an Expansion Module.
     • High-Density Disk Enclosure Replacing an Expansion Module.
   After replacing the expansion module, log in to the DeviceManager to check whether the alarm is cleared.

   • If yes, no further action is required.
   • If no, go to step 4.

4. Collect related information and contact technical support engineers.