**To describe RAID arrays** The following example describes the RAID arrays attached to the instances in a specified stack. :: aws opsworks --region us-east-1 describe-raid-arrays --stack-id d72553d4-8727-448c-9b00-f024f0ba1b06 *Output*: The following is the output for a stack with one RAID array. :: { "RaidArrays": [ { "StackId": "d72553d4-8727-448c-9b00-f024f0ba1b06", "AvailabilityZone": "us-west-2a", "Name": "Created for php-app1", "NumberOfDisks": 2, "InstanceId": "9f14adbc-ced5-43b6-bf01-e7d0db6cf2f7", "RaidLevel": 0, "VolumeType": "standard", "RaidArrayId": "f2d4e470-5972-4676-b1b8-bae41ec3e51c", "Device": "/dev/md0", "MountPoint": "/mnt/workspace", "CreatedAt": "2015-02-26T23:53:09+00:00", "Size": 100 } ] } For more information, see `EBS Volumes`_ in the *AWS OpsWorks User Guide*. .. _`EBS Volumes`: http://docs.aws.amazon.com/opsworks/latest/userguide/workinglayers-basics-edit.html#workinglayers-basics-edit-ebs