Put another way, a ton of gravel will occupy far less space than a ton of Styrofoam.   Crushed stone, for example, has a density of 100 pounds per cubic foot (lb/ft3), which is 1600 kilograms per cubic meter (kg/m3), which is 1.6 metric tons per cubic meter.
HPSS is software that manages petabytes of data on disk and robotic tape libraries. HPSS provides highly flexible and scalable hierarchical storage management that keeps recently used data on disk and less recently used data on tape.
41 - Microsoft Standalone System Sweeper (MSSS) ANTIVIRUS Beta Tool. The Microsoft Standalone System Sweeper is a bootable 'LiveCD' based on WinPE version 3 (Win7) which will detect and wipe viruses from your Windows system. Note that it is what is on the computer that you want to repair that determines which version you choose.