Expansion Overview
What Is EVS Capacity Expansion?
If the capacity of an existing EVS disk is insufficient, you can expand the disk capacity to increase storage space.
Upper Limits on Disk Capacity
The disk capacity can only be expanded, not reduced. The maximum disk capacity is as follows:
- System disk: 1 TiB
- Data disk: 32 TiB
If you detach a system disk and then attach it to another server as a data disk, the maximum capacity of this disk is still 1 TiB.
How Do I Expand the Disk Capacity?
You can expand the capacity of an EVS disk in two steps:
If the server is stopped during the expansion, the additional space of a Windows system disk, Windows data disk, or Linux system disk may be automatically added to the last partition after the server is started. In this case, the additional space can be directly used. If the additional space is not automatically added, you need to extend the partition and file system according to the step 2 above.
Figure 1 Capacity expansion procedure

FAQs
For more information, see FAQs > Capacity Expansion.
- What Is EVS Capacity Expansion?
- Upper Limits on Disk Capacity
- How Do I Expand the Disk Capacity?
- FAQs