Data Domain: Zero available space in File System (/data)

Summary: If the "Avail GiB" value is 0, this indicates that the Active Tier is truly 100% full. Backups cannot be expired or written, snapshots cannot be created.

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Instructions

To check if Active Tier is 100% full, confirm that the "Avail GiB" value is 0.

# filesys show space

==========  SERVER USAGE   ==========
GENERATED: 2025-07-01 06:58:51 EDT

Active Tier:
Resource           Size GiB    Used GiB   Avail GiB   Use%   Cleanable GiB*
----------------   --------   ---------   ---------   ----   --------------
/data: pre-comp           -   5357284.5           -      -                -
/data: post-comp   684080.8    684080.8           0   100%           5995.9
/ddvar                 49.1        13.1        33.5    28%                -
/ddvar/core          1215.2         0.2      1153.2     0%                -
----------------   --------   ---------   ---------   ----   --------------
 * Estimated based on last cleaning of 2025/06/08 18:06:47.
 


Resolving Avail GiB = 0 Issue

To resolve the Avail GiB = 0 issue, follow these steps:

Step 1: Disable All Backups and DD Boost Managed File Replication (MFR) Replication.

Disable all backups and MFR replication to free up disk space.

Step 2: Turn Off All Protocols.

CLI commands:

replication disable all
ddboost disable
cifs disable
nfs disable
vtl disable # (if licensed and using)

Step 3: Run Cleaning.

Run the cleaning process to free up disk space:

filesys clean set throttle 100
filesys clean start
filesys clean watch

Step 4: Turn On Protocols.

After cleaning completes:

filesys clean set throttle 50
replication enable all
ddboost enable
cifs enable
nfs enable
vtl enable # (if licensed and using)
Note: Even if Cleanable GiB indicates 0 bytes would be freed, run the cleaning process as it may still free up disk space.
 
If available space is still 0, review the KB Data Domain: Space Usage in Data Collection Has Exceeded Threshold

Affected Products

DD OS
Article Properties
Article Number: 000346279
Article Type: How To
Last Modified: 06 ذو الحجة 1447
Version:  3
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