This topic describes how to upgrade an Apsara File Storage NAS (NAS) resource plan. You cannot downgrade a NAS resource plan.
Procedure
Log on to the NAS console.
In the left-side navigation pane, click Resource Plans.
In the top navigation bar, select a region.
On the Resource Plans page, find the resource plan and click Upgrade in the Actions column.
On the NAS Resource Plan|Configuration Change page, select the new base capacity that you want to upgrade to.
Check the resource plan information, read and select I have read and agreed to NAS Resource Plan Terms of Service, and then click Buy Now.
Confirm the order and click Buy.