Manage your server - resizing standard and general purpose servers

  • Last updated on: 2016-07-07
  • Authored by: Rackspace Support

Previous section: Create a Cloud Server

This article shows how to resize your server—change the RAM and disk space allocation—in the Cloud Control Panel.

Note: Standard servers can be resized to both smaller and larger servers, but be mindful of the potential for data loss if you size down. General Purpose servers can only be resized to larger servers. All other flavors, OnMetal servers, and any server that boots from a Cloud Block Storage volume cannot be resized.

  1. Log in to the Cloud Control Panel.

  2. In the top navigation bar, click Servers > Cloud Servers to view a list of your existing servers.

  3. Click the gear icon next to the server which you want to resize, and then click Resize.

    A pop-up window listing your server size options is displayed.

  4. Choose your new server size and then click Resize Server.

    Note: Each server size has a different hourly cost for uptime, and the new cost goes into effect when the server resize process is completed. This could mean that you pay different rates for the same server within a given billing cycle.

    A notification displays prompting you to verify the changes made to your system resources and that there was no adverse impact to your server.

  5. Verify that your server was resized correctly by remotely logging in to your server and verifying your system resources and filesystem integrity.

    Note: Verification is an important step because it is the last chance you will have to revert to the original size and cancel any changes to your server. Do not rely on the availability of your website as an indicator of whether the resize was successful, as certain server processes may be suspended while the resize is waiting to be verified.

    For a Linux server, you can SSH to either the public or private IP address and run the commands df -h (Hard Disk usage) and free -m (available RAM memory) to verify the changes.

    For a Windows server, there are additional steps required to use the additional space after a resize. Please follow the instructions from this article: Adding Disk Space After Resizing a Windows Server 2012 Cloud Server

  6. Now that you’ve verified the system resources and checked your filesystems, you can choose to Confirm the resize or Revert to the original size.

    Choosing to Confirm the resize will change the server status. The process will be complete when the Status reads Active, the Current Action is None, and the server has come back up from a reboot. Any web services that you had running may require you to log in and manually restart them.

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