Using virtual disks for disk system checkpointing

Details Using virtual disks for disk system checkpointing Using virtual disks for disk system checkpointing

1994-10-31

1997-05-27

Beausoliel, Jr., Robert W.

Excavating

39518213, 371 492, G06F 1110

Patent

active

056340966

ABSTRACT:
A scheme is presented for storing data on disks in such a way that a checkpoint can easily be taken across several disks connected to different processors in a distributed or parallel computer. A checkpoint can be used to restore the entire disk system to a known state after one or more of the disks or processors fails. When a failure occurs, the disk system is restored to its state at the current checkpoint. The scheme allows significant saving in disk space by requiring that only the data modified since the last checkpoint be copied. The checkpointing algorithm is presented as part of the invention. The invention allows checkpointing of disk space independently of the use of the disk space, for example, in a file system.

REFERENCES:
patent: 3736566 (1973-05-01), Anderson et al.
patent: 5247638 (1993-09-01), O'Brien
patent: 5271013 (1993-12-01), Gleeson
patent: 5280611 (1994-01-01), Mohan et al.
patent: 5317739 (1994-05-01), Elko et al.
patent: 5418916 (1995-05-01), Hall et al.

Affiliated with

Also associated with

Rating

Using virtual disks for disk system checkpointing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Using virtual disks for disk system checkpointing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Using virtual disks for disk system checkpointing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2336962