| 摘要 |
PURPOSE:To prevent the wear of an effective cylinder and the data destruction in the effective cylinder by moving a head at a position at the outside of the effective cylinder while a disk device is not used for a series data access. CONSTITUTION:When the time of a timer 331 is over, since it is the time when a CPU 1 does not use the disk device for the purpose of data read/write, a timeout signal TO of the timer 331 energizes a set switch circuit 332 and new seek is generated automatically depending on the set content of the set switch circuit 332. The set content is a cylinder number at the outside of the effective cylinder. Thus, even when the CPU 1 gives no intervention, the head is in standby at the cylinder at the outside of the effective cylinder. Thus, the data destruction within the effective cylinder is prevented and the wear of the effective cylinder is avoided.
|
