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磁带和磁盘上存储着大量信息,遵从一些简单的维护规则将大有利于防止出错和数据丢失。磁存储介质上的脏物,在读出时可导致多达95％的信号丢失。因此,有必要介绍一下维护这些产品的基本要点。软磁盘和磁带是用上面有涂层的压延材料制成的。基片是一层塑料薄片,上面用胶合剂粘结着一层磁性材料(通常为氧化铁),产品被卷成圆筒。当把它切成半英寸宽的带卷时即成为磁带;而在生产软磁盘时,则用模具把它冲成环形。存储器的涂层材料以及记录和处理时的环境,都会影响存储器的性能。例如,磁带的记录密度可高达6250位/英寸,这样的高密度记录要求磁层表面必须非常干净而平整。一盘新磁带可满足这些要求,但是,在计算机站长期使用后的磁带就达不到这些要求了。
Large amounts of information is stored on tapes and disks, and compliance with some simple maintenance rules will go a long way towards preventing errors and data loss. Dirt on magnetic storage media can result in up to 95% signal loss on readout. Therefore, it is necessary to introduce the basic points of maintaining these products. Floppy disks and tapes are made of a coated rolled stock material. The substrate is a plastic sheet with a layer of magnetic material (usually iron oxide) bonded with glue and the product rolled into a cylinder. When it is cut into a half-inch wide tape when it becomes a tape; in the production of floppy disks, it is punched into a ring with a mold. Memory coating materials and recording and handling of the environment, will affect the memory performance. For example, tape recording density can be as high as 6250 bits / inch. Such high density recording requires that the surface of the magnetic layer must be very clean and flat. A new set of tapes could meet these requirements, but these tapes did not meet the requirements of long standing computer stations.