Expansion Overview¶
What Is Capacity Expansion?¶
If the capacity of an existing disk is insufficient, you can expand the disk capacity to increase the storage space.
Both system disks and data disks can be expanded. Disk capacity can be expanded only, but cannot be reduced.
How to Expand the Disk Capacity?¶
A capacity expansion operation includes the following steps:
Figure 1 Capacity expansion procedure¶
Expand the Disk Capacity on the Management Console¶
Choose a proper expansion method based on the disk status.
For an In-use disk:
The disk has been attached to a server. Check whether the disk can be expanded in the In-use state by referring to Constraints.
If yes, expand the disk capacity according to Expanding Capacity for an In-use EVS Disk.
If no, detach the disk. Then, expand the disk capacity according to Expanding Capacity for an Available EVS Disk.
For an Available disk:
The disk has not been attached to any server and can be directly expanded by referring to Expanding Capacity for an Available EVS Disk.
A shared disk can be expanded only when its status is Available.
Log In to the Server and Extend the Disk Partition and File System¶
After the disk has been expanded on the management console, only the disk storage capacity is enlarged, but its additional space cannot be used directly. You must log in to the server and extend the disk partition and file system. For details, see Table 1.
Capacity After Expansion | Extend Disk Partition and File System |
|---|---|
Disk capacity <= 2 TiB | |
Disk capacity > 2 TiB |
|