The maximum capacity of an Extreme NAS file system is the value that you specified for the Capacity parameter when you create the file system. If the storage of the Extreme NAS file system is full, data cannot be written to the file system. To prevent service interruptions caused by data write failures, we recommend that you increase the capacity of your Extreme NAS file system before the storage is full. This topic describes how to scale up an Extreme NAS file system in the Apsara File Storage NAS (NAS) console.
Prerequisites
An Extreme NAS file system is created. For more information, see Create an Extreme NAS file system in the NAS console.
Usage notes
When you scale up an Extreme NAS file system, take note of the following information:
The file system must be in the Running state. Otherwise, the file system cannot be scaled up.
During the scale-up, the file system is unavailable for a maximum of 90 seconds. The scale-up requires several minutes or several hours to complete. Before the scale-up is completed, the I/O performance of the file system may fail to reach the expected value. We recommend that you scale up the file system during off-peak hours. The duration is being continuously reduced.
A file system can be scaled up but cannot be scaled down.
The version number of Extreme file systems that are created before May 20, 2020 is 1. The version number of Extreme file systems that are created on and after May 20, 2020 is 2. You can view the version number of a file system on the details page of the file system.
The maximum capacity of a file system of version 1 is 32 TiB. The bandwidth does not increase along with the capacity. The maximum capacity of a file system of version 2 is 256 TiB. If you scale up the file system of version 2, the bandwidth and performance increase along with the capacity. For more information about the performance metrics, see Extreme NAS file systems.
Switching between version 1 and version 2 is not supported. However, you can use Data Transport to migrate data from a file system of version 1 to a file system of version 2. For more information, see Migrate data between NAS file systems.
When you scale up a file system, a snapshot is created to ensure the data security of the file system. Therefore, a file system cannot be scaled up if another snapshot is being created for the file system. We recommend that you do not scale up a file system when other snapshot jobs of the file system are running. You can also delete the running snapshot jobs before you scale up the file system.
Procedure
Log on to the NAS console.
In the left-side navigation pane, choose File System > File System List.
In the top navigation bar, select a region.
Find the file system and choose Actions Upgrade in the Actions column.
In the Capacity section of the Upgrade panel, adjust the slider to change the capacity.
In the Terms of Service section, select the check box before the terms of service. The terms of service vary depending on the billing method of the Extreme NAS file system.
If the billing method of the file system is Pay-as-you-go, select the check box before Extreme NAS (Pay-As-You-Go) Terms of Service.
If the billing method of the file system is Package Year, select the check box before Extreme NAS Terms of Service.
Click Buy Now and follow the instructions to complete the payment.