EBS Multi-Attach
Attach a single Provisioned IOPS SSD volume to multiple EC2 instances within the same Availability Zone.
The Prerequisites
Nitro System
Instances must be built on the AWS Nitro System to support Multi-Attach capabilities.
Volume Types
Exclusively available for io1 and io2 Provisioned IOPS SSD volumes.
Same AZ
All instances and the EBS volume must reside in the exact same Availability Zone.
How it Works
Concurrent Read/Write Access from Multiple Nodes
Full Read/Write
Each attached instance has full read and write permissions to the shared volume.
Cluster-Awareness
Requires a cluster-aware file system (e.g., GFS2, OCFS2) to prevent data corruption.