Help Center/ Elastic Volume Service/ User Guide/ Expanding the EVS Disk Capacity/ Expansion Overview
Updated on 2025-05-29 GMT+08:00
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Expansion Overview

As your business develops or data volume grows, existing EVS disk capacities may no longer meet your storage needs. EVS capacity expansion is the solution to this issue. You can increase the storage space of existing EVS disks without interrupting services while ensuring continuous data storage and service stability.

Upper Limits on Disk Capacity

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?

Table 1 EVS disk capacity expansion procedure

Procedure

Operation Instruction

Step 1: Expand the Disk Capacity on the Console

Step 1: Expand Disk Capacity

Step 2: Extend Disk Partitions and File Systems on the Server
  • If a server is stopped during the expansion, the additional space added to 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 reference in the preceding table.
  • The maximum disk size that MBR supports is 2 TiB, and that GPT supports is 18 EiB.
  • To check the current partition style of the disk, see How Do I Check the Disk Partition Style in Linux?
Figure 1 Capacity expansion procedure

Billing for Capacity Expansion

You will be billed for the additional capacity of a disk after you expand the disk capacity. The billing mode of the additional capacity is the same as that of the disk.

  • For a pay-per-use disk: The new capacity takes effect immediately, so you will be billed for the new capacity of the disk immediately.
  • For a yearly/monthly disk: You need to pay for the price difference after expanding the disk capacity. The disk expiration time remains unchanged.

For details about EVS billing, see Billing for EVS Disks.

Parent Topic: Expanding the EVS Disk Capacity