Swap memory is a portion of storage used as virtual memory when your server's RAM is fully utilized. It helps prevent crashes by moving less-used processes from RAM to swap space, keeping the system stable under heavy load. This article shows how to add swap memory on Ubuntu 20.04 using a swap file and Vultr Block Storage to expand your server’s available memory. Before you begin: * Have an [Ubuntu 20.04 server](https://www.vultr.com/servers/ubuntu/). * Have an existing block storage. * Access t......