Cloud Disk Expansion Guide_ESC (ECS)

Cloud disk expansion refers to capacity expansion of existing cloud disks (system disks or data disks) to meet more data storage requirements. With cloud disk expansion, you can more easily adjust the size of cloud disk capacity to avoid data loss due to insufficient storage space. This article introduces the cloud disk expansion process, expansion ceiling, expansion fees and other information.

Cloud disk expansion process

The first step is to expand the cloud disk capacity on the ECS console.
See Step 1: Expand the cloud disk capacity 。

The second step is to expand partitions and file systems in the operating system. You need to connect ECS instances remotely. See Connect ECS instances remotely 。

Before resizing partitions and file systems, you need to select the corresponding resizing operation according to the actual partitions of the cloud disk (whether to partition, partition type, resizing capacity, etc.), as detailed in the following table.

Determine the expansion operation according to the cloud disk partition		Specific operation
Cloud disk is not partitioned (raw device): directly expand the file system		Expand file system
Cloud disk partitioned	After cloud disk expansion, the capacity is less than or equal to 2 TiB: directly expand partitions and file systems	Expanding partitions and file systems (Linux) Expand partitions and file systems (Windows)
	After cloud disk expansion, the capacity is greater than 2 TiB and GPT partitions: directly expand partitions and file systems
	After cloud disk resizing, its capacity is greater than 2 TiB and it is an MBR partition: you need to convert the partition first, and then expand the partition and file system	Convert MBR partition to GPT partition Expanding partitions and file systems (Linux) perhaps Expand partitions and file systems (Windows)

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In addition to expanding existing cloud disks, you can also obtain more storage space by the following methods.

Method 1: Create a new cloud disk, mount it to the instance as a data disk, and then initialize itself. See Create cloud disk 。
Mode 2: Replace a system disk with a larger capacity. See Replace the operating system (system disk) 。

Upper limit of cloud disk expansion

The capacity after expansion must be greater than the existing capacity and less than or equal to the maximum capacity supported by the cloud disk. The maximum capacity of the system disk and data disk is as follows:

System disk: 2048 GiB
Data disk: 32768 GiB

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ESSD PL-X cloud disk, ESSD Entry cloud disk Both SSD cloud disks and efficient cloud disks support the above capacity limits.
The maximum capacity of the ESSD AutoPL cloud disk and the ESSD cloud disk as data disks is 65536 GiB.
The maximum capacity of ordinary cloud disk (the previous generation cloud disk product, which has gradually stopped selling) is 500 GiB when it is used as a system disk, and 2000 GiB when it is used as a data disk.

For more information, see Block storage usage limit 。

For example, the system disk whose cloud disk type is ESSD cloud disk has a capacity of 40 GiB before expansion. When the system disk is expanded, the capacity must be greater than 40 GiB and less than or equal to 2048 GiB.

Expansion cost

When you expand the cloud disk, you will be charged for the new capacity. The billing method is the same as when you purchase the cloud disk.

Monthly subscription cloud disk: for capacity expansion, the price difference between the new capacity and the old capacity is made up according to the remaining time of the purchase time.
Pay as you go cloud disks: take effect immediately after capacity expansion, and start charging at the price of new capacity.

If you purchased Storage capacity unit package , you can automatically deduct the billing bill of pay as you go cloud disks. For more information, see Block storage charging 。