# IPZ VPD D-Bus Interfaces

IPZ is a VPD (Vital Product Data) format used in IBM Power systems. The format
consists of keywords that are stored as key-value pairs (Keyword name and its
value). Keywords are grouped into records, usually with similar function grouped
into a single record.

The [OpenPower VPD][1] format is quite similar to the IPZ format and describes
the record-keyword structure.

Also refer to the [VPD Collection design document][2] that describes how the VPD
collection application on the BMC will parse and publish the VPD data for IBM
Power systems on D-Bus.

The D-Bus interfaces defined here describe how IPZ VPD will be made available on
D-Bus. Each YAML here represents a record in the IPZ VPD and keywords that
belong to that record are represented as properties under that interface. The
type of every property shall be a byte array.

[1]:
  https://www-355.ibm.com/systems/power/openpower/posting.xhtml?postingId=1D060729AC96891885257E1B0053BC95
[2]: https://github.com/openbmc/docs/blob/master/designs/vpd-collection.md