Expanding a DESS Device

If the capacity of your DESS device is insufficient, you can expand it.

Context

For details about the capacity expansion of DESS device, see the following table.

**Table 1** Description of capacity expansion of DESS device
Type	Description
Common I/O and common I/O (low latency)	The capacity of a DESS device can be expanded only when the device is in the Available state and the device capacity you have applied for does not reach the maximum capacity 100 TB. The initial capacity of a DESS device is as follows: 10 TB: Capacity expansion can be performed once after capacity expansion to 20 TB. The capacity expansion specification is 20 TB. Other capacity: Only one capacity expansion is supported, and the capacity expansion specification is 20 TB.
High I/O, high I/O (low latency)	The capacity of a DESS device can be expanded only when the device is in the Available state and the device capacity you have applied for does not reach the maximum capacity 100 TB. Only one capacity expansion is supported, and the capacity expansion specification is 20 TB.
Ultra-high I/O, ultra-high I/O (low latency)	The capacity of a DESS device can be expanded only when the device is in the Available state and the device capacity you have applied for does not reach the maximum capacity 100 TB. The initial capacity of a DESS device is as follows: 10 TB: Capacity expansion can be performed multiple times after capacity expansion to 20 TB. The subsequent capacity expansion specifications are 20 TB, 40 TB, 60 TB, and 80 TB. Other capacity: Capacity expansion can be performed for multiple times. The capacity expansion specifications are 20 TB, 40 TB, 60 TB, and 80 TB.

Procedure

Logging in to the Management Console.

Click and select the wanted region.
Click and choose Dedicated Cloud > Dedicated Enterprise Storage to go to the DeC management console.

On the navigation pane on the left, choose Dedicated Enterprise Storage > DESS Devices to go to the DESS device list page.
Click Expand in the row of the wanted resource instance. The Expand dialog box is displayed.
Select the capacity to be added.

The total capacity must be 100 TB or less after expansion.
Click Apply Now.
Confirm the order and click Submit.

Follow-Up Procedure

After submitting the order, in the upper right corner on the DESS home page, choose Fees > My Orders. You can click Details to view the order details.

For details about the DESS device capacity expansion order status, see Table 2.

**Table 2** Order status description
Status	Description
Pending Approval	Your order is in the Pending Approval state as soon as you submit the order.
Pending	The system administrator approves the order within three days. After the approval, the order status changes to Pending.
Processing	You can click Pay to pay for the order. After the payment, the order status changes to Processing.
Completed	The O&M personnel, after being notified, expands the capacity of the DESS device. When the order status changes to Completed, the capacity is successfully expanded.