Arrangement for filtering data item updates to reduce the number

Details Arrangement for filtering data item updates to reduce the number Arrangement for filtering data item updates to reduce the number

1996-12-23

2000-11-14

Swann, Tod R.

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

711159, G06F 1216

Patent

active

061483826

ABSTRACT:
A digital data processing system comprises a host information generating device, a mass storage subsystem, and a back-up information storage subsystem. The host information generating device generates information and provides it to the mass storage subsystem for storage. The mass storage subsystem receives the generated information from the host information generating device and transfers the generated information to the storage element for storage, and further transfers the generated information to the back-up information storage subsystem. The back-up information storage subsystem receives and stores the generated information from the mass storage subsystem's control element. The back-up information storage subsystem includes a filter/buffer module, a tape log module and a reconstruction module. The filter/buffer module filters and buffers the information received from the mass storage subsystem and provides the buffered information to the tape log module for storage. The tape log module stores the information received from the filter/buffer module in logging fashion on tape cartridges. The filter/buffer module filters the information received from the mass storage subsystem so as to reduce the amount of information to be logged, so that, if the host changes the information while it is being buffered, the filter/buffer module will provide only the most recent information to the tape log module for storage. If a failure occurs in the mass storage subsystem, the reconstruction module can reconstruct the information that was on the failed device using the stored information from the tape log module and the buffered information.

REFERENCES:
patent: 5089958 (1992-02-01), Horton et al.
patent: 5511188 (1996-04-01), Pascucci et al.
patent: 5555371 (1996-09-01), Duyanovich et al.
patent: 5682513 (1997-10-01), Candelaria et al.
patent: 5684984 (1997-11-01), Jones et al.

Affiliated with

Also associated with

Rating

Arrangement for filtering data item updates to reduce the number does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arrangement for filtering data item updates to reduce the number, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for filtering data item updates to reduce the number will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2075869