This material is based on research sponsored by the Air Force Research
Laboratory, under agreement number F49620-01-1-0433, and by DARPA/ITO's
OASIS program, under Air Force contract number F30602-99-2-0539-AFRL.
The U.S. Government
is authorized to reproduce and distribute reprints for Governmental
purposes notwithstanding any copyright notation thereon. The views and
conclusions contained herein are those of the authors and should not be
interpreted as necessarily representing the official policies or
endorsements, either expressed or implied, of the Air Force Research
Laboratory or the U.S. Government.
We thank the members and companies of the PDL Consortium: American Power Conversion, Cisco Systems, EMC,
Google, Hewlett-Packard Labs,
Hitachi,
IBM,
Intel,
LSI, Network Appliance,
Oracle,
Panasas,
Seagate Technology, and Symantec for
their interest, insights, feedback, and support.