Product : AppScale, Eucalyptus/Current, 4.4.5
Feature : Block storage, Storage, Infrastructure Services
Content Owner:  John Gallucci
Summary
Elastic Block Storage (EBS) provides block-level storage volumes that you can attach to instances.
Details
http://docs.eucalyptus.cloud/eucalyptus/4.4.5/index.html#shared/using_block_storage.html