Description

When virtual disk snapshots are deleted, the corresponding disk space is not automatically released due to holes in the storage. As time passes, an increasingly larger space is occupied, leading to great waste. Disk optimization can help you solve this issue.

Precautions

1. When the disk optimization plan is executed, disk cleanup is performed only for powered-off VMs.
2. When the specified time arrives, the system collects and optimizes disks for which more than 5 GB space can be released.
3. An ongoing disk cleanup task will pause when any client connects to the VM.
4. Do not perform a disk optimization task when there are any of the following ongoing tasks: backup, clone, migration, template deployment, conversion to template, VM deletion, and system upgrade. When a task conflict occurs, stop disk optimization.

Prerequisites

N/A

Steps

Go to System > Advanced > Global Settings. In the Disk Optimization area, select Enable.

• Schedule:

Recurring: Disk optimization is enabled as scheduled per week.

One-Time: Disk optimization is enabled on the selected day.

• Speed:

Low: Disk cleanup is performed at 5 MB/s, with no impact on the VM running status.

High: Disk cleanup is performed at 60 MB/s. As this may affect the VM running status, we recommend that you perform the high-speed disk cleanup during off-peak hours.