Following entries were seen from the Config data collected via DataCollect.sh script, please see TECH167878 to see how to run this script and collect data for troubleshooting. As you see, the serial number is missing for the disk in slot 7:

Enclosure ID    Slot            Device Id       PD Type         Raw Size                                State           Serial Number                                                         FwVer
8                        6               27              SATA            1.819 TB [0xe8e088b0 Sectors]           Hotspare, Spun Up       9WM1HR5QST32000644NS SN12
8                        7               28              SATA            1.819 TB [0xe8e088b0 Sectors]           Hotspare, Spun Up
8                        8               29              SATA            1.819 TB [0xe8e088b0 Sectors]           Online, Spun Up         9WM1JALMST32000644NS SN12
 

To fix this issue, do the followings:

1. Re-seat the disk (take it out, hold for a minute and place it back securely into the same slot)

2. Please note that after re-seating the disk, the serial number now should be displayed (run the DataCollect.sh script again and check it)

3. Now run the following command and check the state of the disk

4. Based on the state of the disk follow instructions in TECH167878.

5. If step 1 and the sub-sequent steps (including the steps taken from TECH167878 do not fix the issue, open a case with the hardware provider (IBM or AxenTech based on the geography - please see TECH135826) and request to replace the disk.

Please keep the outputs of DataCollect.sh script run at different times during troubleshooting process in case Symantec Technical Support Engineers need them for any further analysis.