Northern Micro Spirit P9X79-AS, Руководство пользователя

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Hard Drive Maintenance
Traditional Hard Disks
Traditional hard disks are a rigid magnetic-sensitive disk mounted on a single spindle. Each disk has one or two read and write heads (for one or both
sides), which float above the surface of the disk. The disk spins at a constant rate, and the heads move across the surface to locate information as
required.
Each disk is segmented into tracks, which are themselves divided into sectors. The address of a piece of information includes both the track and sector.
Fragmented files
After storing and removing many pieces of data, the hard disk can get fragmented — information for the same file may be scattered everywhere.
When you call up that file, the heads must move many times back and forth to recall the information. Defragmenting the disk puts these pieces back
together and gets your computer running fast again .
Your
operating system may offer a feature to consolidate your disk. There are also several programs available that examine and, if necessary,
defragment the disk.
Solid State Disks
Solid State disks (SSD) are a data storage device using integrated circuit assemblies as memory to store data persistently. SSD technology uses
electronic interfaces compatible with traditional hard disk drives. SSDs have no moving mechanical components, using flash memory instead of magnetic
disks. They can be used in place of traditional magnetic hard disk drives or along side traditional drives for more storage or as a faster way to boot the
computer.
Erased files
Regardless of whether you have a magnetic drive or a solid state drive, if you have erased a file by mistake, most operating systems offer an undelete
or restore feature to recover some or all of your material. The more work you do on the computer after deleting the program, the lower the probability
of full recovery.
The fact that erased files remain on the disk may be a concern for some security applications. If security-sensitive information is erased and the
computer or diskette passes to another person, security may be breached. To prevent this from happening, you can do a low-level format on a hard
drive , or reformat a diskette. Programs for low-level operating system formats are readily available.