A hard disk is indeed a data storage device, which is used for storing and retrieving digital information. Hard disk is one of the main storage media of computer. It is composed of one or more discs, which are made of aluminum or glass, and the rapidly rotating disks (or platters) are coated with magnetic material. SSD, HDD and HHD are commonly seen hard disks.
Hard disk is the most important category of permanent storage device used in PCs. There are also other kinds: floppy disks, CD-ROMs, tapes, removable drives, and so on. Three obvious differences can be easily found between hard disk and other types of storage device: size (usually the hard disk size is larger), speed (usually the hard disk speed is faster) and portability (usually the hard disk is fixed in PC and not removable).
MiniTool Partition Wizard supports all hard disk types that can be recognized by Windows: IDE, SATA, SCSI, USB external disk, fire wire disk, etc. MiniTool Partition Wizard also supports RAID devices. All OS-recognized RAID devices can be handled in a good way by MiniTool Partition Wizard.