Problem description
The system disk of a Windows instance is expanded from 40GB to 100GB. Check whether the expansion is completed. The size displayed in partition C is 99.9GB, but the available space (percentage) is smaller than before.
Cause
The virtual memory is turned on and automatically managed by the system, while the memory used for physical storage is 64GB. Therefore, after expansion, the virtual memory increases to 65GB. According to system recommended set virtual memory is a maximum 90GB, if disk space is enough virtual memory will use more of system disk space.
Solution
Alibaba Cloud reminds you that:
- Before you perform operations that may cause risks, such as modifying instance configurations or data, we recommend that you check the disaster recovery and fault tolerance capabilities of the instances to ensure data security.
- You can modify the configurations and data of instances including but not limited to Elastic Compute Service (ECS) and Relational Database Service (RDS) instances. Before the modification, we recommend that you create snapshots or enable RDS log backup.
- If you have authorized or submitted sensitive information such as the logon account and password in the Alibaba Cloud Management Console, we recommend that you modify such information in a timely manner.
If not necessary, temporarily disable virtual memory. Alternatively, perform the steps described in the virtual memory configuration for Windows to avoid occupying a large number of disk space. Then restart the instance.
Application scope
- Elastic Compute Service