Online RootFS growth
On growth-enabled images, Sandbox0 automatically expands the writable RootFS as free space runs low, within a configured sparse logical ceiling up to 64 TiB. Agent processes keep running. Growth is enabled in the qualified Cloud region; confirm activation for other regions. Existing images and snapshots retain their captured storage geometry. The ceiling is logical capacity, not preallocated host disk.
Samsung Virtual Servers already retain an installed OS disk. The cited VM/image material does not establish automatic low-space-triggered online growth of the complete durable RootFS; confirm volume and filesystem expansion requirements for the selected service.