Posted On: Feb 15, 2023

You now have the automated host maintenance feature available for your Amazon EC2 Dedicated Hosts. With automated host maintenance, in the rare event of degradation of a dedicated host, AWS will automatically reboot the EC2 instances running on it onto a newly allocated dedicated host during a scheduled maintenance event, to reduce your application’s downtime and offload undifferentiated heavy-lifting of host maintenance.

AWS regularly monitors the health of your hosts and the instances running on them. With automated host maintenance, in the rare event of a degradation or for planned EC2 maintenance, AWS will notify you, allocate a new host, and schedule a maintenance event for two weeks later to give you time to prepare. During the maintenance event, AWS will reboot your instances on the replacement host and notify you if an instance cannot be moved. Along with reviewing the event details on the EC2 Events page or the AWS Health Dashboard, you can change the order of instance reboot or reschedule the event.

EC2 Dedicated Hosts simplify bringing your existing software licenses and workloads requiring a dedicated physical server to the cloud. Using your eligible software licenses that are bound to VMs, sockets, or physical cores on EC2 instances running on dedicated hosts, drives flexibility and cost-efficiency for your business. In addition, with dedicated hosts you get the entire capacity of the physical server to launch different instance sizes and exercise granular placement control based on your business needs.

The automated host maintenance feature is available for dedicated hosts in all classic AWS regions except AWS Outposts and AWS Local Zones. There are no additional charges for using this feature. To learn more and see the full list of instance types this feature is supported on please visit the Dedicated Host Maintenance user guide.