The number of I/O operations per second (IOPS) provisioned for the volume.
The size of the EBS volume in gibibytes (GiB).
The throughput in MiB/s provisioned for the volume (applicable to gp3, io1, and io2bx volumes).
The EBS volume type, such as gp2, gp3, io1, io2, st1, or sc1.