Amazon EBS Multi-Attach now available on Provisioned IOPS io1 volumes
Today we are announcing general availability of Multi-Attach on Amazon Elastic Block Store (Amazon EBS) volumes. You can now enable Multi-Attach on Amazon EBS Provisioned IOPS io1 volumes to allow a single volume to be concurrently attached to up to sixteen AWS Nitro System-based Amazon Elastic Compute Cloud (Amazon EC2) instances within the same Availability Zone. Each attached instance has full read and write permission to the shared volume. For applications that manage storage consistency from multiple writers, Multi-Attach makes it easier to achieve higher application availability.
Source:: Amazon AWS