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Storage usage in Cloud.rc volumes #1237

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856b618
Fix formatting of heading for deleting data
bdu-birhanu Jul 13, 2026
dd2df81
fix typo
bdu-birhanu Jul 15, 2026
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16 changes: 16 additions & 0 deletions docs/uab_cloud/tutorial/volumes.md
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Expand Up @@ -241,3 +241,19 @@ Click "Delete Volume" again to delete the volume permanently.

It will not be possible to delete a volume if it has an associated [volume snapshot](../snapshots.md). The snapshot will need to be deleted first.
<!-- markdownlint-enable MD046 -->

## Deleting Data From Volume

@iam4tune iam4tune Aug 18, 2026

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include "a" before Volume


Data can be deleted from a volume at any time to free space within the VM filesystem. However, deleting files does not automatically reduce the physical storage consumed by the volume.

@iam4tune iam4tune Aug 18, 2026

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Since this is the first use of the term on the page, “VM” should be introduced as “Virtual Machine (VM).”


All block storage volumes in Cloud.rc are thin provisioned. This means that the physical storage consumed by a volume depends on the amount of data written to it, not the provisioned volume size.

For example, a 160 GB volume containing 5 GB of data consumes approximately 5 GB of physical storage. As additional data is written, more physical storage is allocated until the volume reaches its maximum provisioned size of 160 GB.

When data is deleted:

- The VM operating system marks the deleted space as available.
- The provisioned volume size remains unchanged.
- The backend storage used by the data in the volume is not automatically reclaimed.

Therefore, deleting files does not automatically reduce the physical storage consumed by the volume.
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