Data Domain: Add new disk to the Cloud Metadata Tier on DDVE

Summary: This article provides the steps to expand the Cloud Metadata Tier on a DDVE when it is full by adding new virtual disk

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Instructions

Data Movement (FMIG) fails when Cloud Metadata Tier is out of space.

An  alert similar to the below is seen:   
EVT-FMIG-00001: Data movement has encountered an error.
Alert Id:       m0-3884
Event Id:       EVT-FMIG-00001
Event Message:  Data movement has encountered an error.
Object:         Tier=test-cloud-C1
Additional Information: Cause=Cloud tier metadata capacity is full
Event Description:
 File migration is suspended until this problem is resolved.

The Cloud Metadata Tier utilization is seen with the following command:     
# filesys show space tier cloud local-metadata
Cloud Tier: local-metadata usage
Cloud unit        Size GiB   Used GiB   Avail GiB     Use%
---------------   --------   --------   ---------   ------
test-cloud-C2       4066.3     3895.7       170.6    96.0%
test-cloud-C1       1239.8     1239.7         0.1   100.0%
---------------   --------   --------   ---------   ------

If Cloud Clean cannot free up space in the Metadata Tier, it may be necessary to add additional disks to the cloud tier.

The following procedure can be used to add disks to the Cloud Tier.
  1. Add a Thick provisioned independent-persistent disk of required size to DDVE How to add/remove storage to your Data Domain Virtual Edition (DDVE)
  2. Verify that the new disk is visible in DD as a new device devXX. A new disk is in unknown (U) state when checked using command # disk show state.
Example:   
# disk show state
Dev     1  2  3  4  5  6  7  8  9  10
-----   ------------------------------
1-10    Y  Y  .  .  .  .  .  .  .  .
11-19   .  .  .  .  .  .  .  .  U
-----   ------------------------------
Legend State Count
------ -------------- -----
. In Use Device 16
U Unknown Device 1
Y System Device 2
------ -------------- -----
Total 0 disks and 19 devs
 
In the above example, the newly added disk is dev19.
  1. Take a downtime of 30 minutes and disable DD Filesystem using the command # filesys disable.
  2. Add the new disk to Cloud Tier using the command # storage add tier cloud devXX.
Example:   
# storage add tier cloud dev19

Checking storage requirements...done
Adding dev19 to the cloud tier...done

Updating system information...done

dev19 successfully added to the cloud tier.
 
  1. Enable the DD Filesystem using the command # filesys enable. 
  2. At this point, the Cloud Metadata Tier is automatically expanded by utilizing the newly added disk.
Example:     
# filesys show space tier cloud local-metadata
Cloud Tier: local-metadata usage
Cloud unit        Size GiB   Used GiB   Avail GiB    Use%
---------------   --------   --------   ---------   -----
test-cloud-C2       4992.1     3895.7      1096.4   78.0%
test-cloud-C1       2201.7     1239.7       962.0   56.0%
---------------   --------   --------   ---------   -----

Affected Products

Data Domain

Products

Data Domain
Article Properties
Article Number: 000021457
Article Type: How To
Last Modified: 08 Sept 2025
Version:  5
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