- 1. RedHat Package Manager.
- 2. Revolutions Per Minute.
RPM is how fast a disk spins. Faster disks will (in general) have a higher RPM, because the rate at which data can be streamed to or from a disk is limited by how fast the disk spins. There are other factors which influence how fast a disk is (which include the number of platters), but in general a disk which spins faster will support faster transfer rates.