066 EBS Multi-Attach

Only available for io1/io2 family

Attach same EBS to multiple EC2 instances in same AZ

Each insatnce has full r/w permission

Use case

• Higher app availability in clustered linux app
• app must manage concurrent write operations

Limit

• up to 16 EC2 instances
• cluster-aware file system (not XFS, EX4, …)