Data Domain Expansion Error - "Must fully use partial shelf X.1 first"

When attempting to add a second disk pack to the active storage tier, the operation fails, and the system outputs the following error message:

sysadmin@DDHOSTNAME# storage add tier active enclosure 5:2
Checking storage requirements…done
**** Enclosure cannot be added.
**** Could not add enclosure 5.2:
                Must fully use partial shelf 5.1 first.

• This is typically caused by a capacity license limitation that did not cover the full raw capacity of the initial shelf at the time it was deployed. 
• PowerProtect Data Domain Appliances such as the DD6300 and DD6900 support partial capcity shelves.  Data Domain: How to Add a Partial Shelf or Enclosure
• Data Domain requires existing partial shelves to be fully consumed before allowing the addition of subsequent disk packs on that same shelf.

To verify that the disk pack is partially used due to licensing bounds, run the storage show all command. Look for the presence of the "Expandable" flag under the Additional Information column for the disk group associated with that enclosure.

sysadmin@DDHOSTNAME# storage show all

Disk      Disks                            Count   Disk       Additional
Group                                              Size       Information
-------   ------------------------------   -----   --------   -----------
dg2       2.1-2.2, 2.4-2.15                14      3.6 TiB              
dg3       3.1-3.14                         14      3.6 TiB              
dg4       4.1-4.14                         14      3.6 TiB              
dg5       5.1-5.3, 5.13-5.15, 5.25-5.27,   14      3.6 TiB              
          5.37-5.39, 5.49-5.50                                          
dg6       5.4-5.6, 5.16-5.18, 5.28-5.30,   14      3.6 TiB    Expandable
          5.40-5.42, 5.52-5.53                                          
(spare)   2.3                              1       3.6 TiB              
(spare)   3.15                             1       3.6 TiB              
(spare)   4.15                             1       3.6 TiB              
(spare)   5.51                             1       3.6 TiB              
(spare)   5.54                             1       3.6 TiB

(Note: Running disk show state will not show this condition as it only reports raw physical drive states).

To resolve this issue, apply the updated capacity license to the Data Domain system, expand the file system to absorb the remaining capacity of the first pack, and then add the second disk pack.

Execute the following commands in sequence using the sysadmin account:

1. Expand the filesystem to fully utilize the first disk pack using the newly applied license:

   filesys expand

2. Add the second disk pack to the active tier

   storage add tier active enclosure enclosurenumber:diskpacknumber

3. Expand the filesystem again to integrate the storage capacity of the newly added second disk pack:

   filesys expand

Important Licensing Considerations

• Capacity Math: For a DS60 shelf, each disk pack contains 15 drives. If the shelf is populated with 4TB drives, a 60TB raw capacity license is required to fully utilize a single disk pack.
• Partial Utilization: If the installed license capacity is lower than the physical raw capacity of the disk pack, the disk pack will remain partially utilized, blocking further expansions until an updated license is applied and the file system is expanded.

If you continue to experience issues after following these steps, please open a service request with Dell Technical Support for further assistance.