3 ms·

Is that the size of the root volume?

• helper 13y ago
  After spinning up an instance-store m3.medium, the 4GB volume is in addition to the root volume.
• jmelloy 13y ago
  They have a concept of an "ephemeral" volume, which is a disk mounted on the same rack. It goes away every time you reboot, but is useful for caching or file transfers, because it's the fastest disk you have access to. In day to day usage it's not actually that important. You can have as much EBS/SAN data as you're willing to pay for, so everything important gets stored on that.