For disk volumes, the following fields exist in a usage record. account – name of the account accountid – ID of the account domainid – ID of the domain in which this account resides zoneid – Zone where the usage occurred description – A string describing what the usage record is tracking usage – String representation of the usage, including the units of usage (e.g. 'Hrs' for hours) usagetype – A number representing the usage type (see Usage Types) rawusage – A number representing the actual usage in hours usageid – The volume ID offeringid – The ID of the disk offering type – Hypervisor templateid – ROOT template ID size – The amount of storage allocated startdate, enddate – The range of time for which the usage is aggregated; see Dates in the Usage Record