Disk expansion on NBU appliance 5220

[rookie11]

Hello All

I have an NBU appliance 5220. We need to add new 24 TB disk expansion unit on it.

madapp.Storage> Show 
----------------------------------------------------------------------
Device                           | Total       | Unallocated | Status
----------------------------------------------------------------------
Appliance Operating System (sda) |   930.38 GB |        -    | In Use
Base Unit Storage (unit_1)       |   4.5429 TB |        0 GB | In Use
Expansion Unit Storage (unit_2)  |   35.470 TB |   12.450 GB | In Use

Base Unit Storage (unit_1)
-------------------------------
Catalog      :      1 GB
Deduplication: 4.5419 TB

Expansion Unit Storage (unit_2)
-------------------------------
Deduplication: 35.458 TB

----------------------------------------------------------------
Partition     | Total       | Available   | Used        | %Used
----------------------------------------------------------------
AdvancedDisk  |        0 GB |        0 GB |        0 GB |     0
Deduplication |       40 TB |   3.2729 TB |   36.727 TB |    92
Unallocated   |   12.450 GB |        -    |        -    |    - 

madapp.Appliance> Status 
Welcome, messages for: Mon Jan 19 15:28:49 CET 2015
====================================================

Appliance Model is NetBackup Appliance 5220.

Appliance Version is 2.5.3.

Appliance is configured as media server.

I read this technote http://www.symantec.com/business/support/index?page=content&id=HOWTO94258#v79361754. which is simple to follow. 

question 1)  but i m unable to find Manage > Storage > Disks. option disk is missing. Please suggest

esmadbck03.Manage> Storage 
Entering Storage Administration view...

Add      Add expansion unit storage.
Beacon   Flashes or stops flashing the lights on all the disk drives of an expansion unit.
Exit     Logout and exit from the current shell.
Monitor  Monitor storage tasks.
Move     Move storage partition from one device to another.
Remove   Remove expansion unit storage.
Resize   Resize storage partition.
Return   Return to the previous menu.
Scan     Refresh the storage disks and devices information.
Shell    Shell operations.
Show     Display NetBackup storage information.

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question 2)   36TB of disk(dedupe) in use already How much time it wil take to redistribute data by appliance once I add 24TB of disk.

[Andrew_Madsen · Accepted solution]

Question 1: The Manage > Storage > Disks is from the Web GUI not the CLISH. Use the "Add" option instead then the Resize Option to grow your pool.

Question 2: Good question but basically unanswerable because it depends on how busy the system is and if it need to re-level at all. New writes will go to the new disk but you may not redistribute any of the old data.

[rookie11]

Q1 : thanks, u pointed out my mistake.

Q2 : system would not be busy, my plan is to get all weekly backups done. then do disk expansion during daytime. all major backups and duplications would be over by then. hence no backups, no replication, no image import etc. 

[RiaanBadenhorst · Accepted solution]

A1: manage > storage > add unit_3

A2: It is instantly available. The appliances uses vxvm and it just expands the concatenated volume housing your deduplication pool.

Note: It is not recommended to use the storage in the head (Unit_1) in the deduplication pool along with the disk shelves.