Posted On: Sep 18, 2023

Amazon EBS io2 volumes now support shared storage fencing through NVMe reservations. For clustered applications that leverage EBS Multi-Attach capability of io2 volumes, NVMe reservations enables safe write access across the cluster nodes. Clustered applications are designed to increase application availability and scalability by using multiple compute nodes that coordinate access to shared storage. You can now use Multi-Attach on io2 volumes to deploy clustered Windows and Linux applications that require storage-layer fencing, such as SQL Server Failover Cluster Instances (FCI), within a single Availability Zone.

NVMe reservations are available on io2 volumes that have Multi-Attach enabled and in all Regions where io2 volume type is available.

To learn more, join AWS on Air on 12pm PST on 9/22, visit the EBS Multi-Attach user guide. There is no additional charge to use Multi-Attach.