Saving Data in a Partitioned Buffer Upon Power Failure
Original Publication Date: 1982-Jul-01
Included in the Prior Art Database: 2005-Feb-09
A host is connected to a plurality of magnetic tape recorders via a dynamically partitionable buffer. The buffer contains selected data for being written to the tape recorders or being read from the tape recorders. Generally, the amount of data in the partitioned buffer to be recorded on the tape recorders is minimal. A power-failure sensor detects an upcoming failure, such as an increase in current, decrease in voltage, or a substantial phase change, to cause all the data received from the host to be written to the tape recorders in accordance with an asynchronous control. A control activated by a power-failure sensor causes all tape recorders which are to receive data to move tape. When high density recording is employed, tape only moves a vary short distance.