Data logging for hard disk data storage systems

Details Data logging for hard disk data storage systems Data logging for hard disk data storage systems

1991-11-21

1994-03-22

Heckler, Thomas M.

Boots, shoes, and leggings

364DIG1, 3642383, 3642384, 3642362, 3642481, 3642397, 3642842, G06F 1300

Patent

active

052972585

ABSTRACT:
A data log for use with conventional hard disk subsystems or other data storage subsystems provides a system to minimize delays caused in a computer system due to the input/output systems, such as hard disks. The data log is preferably one or more hard disks, or any other non-volatile data storage device. Preferably, when the operating system requests a write to the hard disk subsystem, a hard disk controller directs the data to the data log rather than the hard disks. Then, when I/O requests are at a lull, the hard disk controller moves the data from the data log to the hard disk subsystem. Because the data is written to the data log sequentially, the hard disk controller completes the write operation quickly. This minimizes any bottleneck created while the system waits for the completion of the write operation.

REFERENCES:
patent: 4467421 (1984-08-01), White
patent: 4489378 (1984-12-01), Dixon et al.
patent: 4839745 (1989-06-01), Tindall
patent: 4979054 (1990-12-01), McCullough et al.
patent: 5040111 (1991-08-01), Al-Salemeth et al
patent: 5088081 (1992-02-01), Farr

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