Browse Prior Art Database

Application of Asymmetric Bandwidth to the Backup/Restore Problem

IP.com Disclosure Number: IPCOM000115471D
Original Publication Date: 1995-May-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Kartchner, KK: AUTHOR [+2]

Abstract

A method for delivering backup and restore services to geographically dispersed customers employing the application of asymmetric bandwidth is presented. Adequate performance for the service is obtained using commonly-available components applied in a novel manner.

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Application of Asymmetric Bandwidth to the Backup/Restore Problem

      A method for delivering backup and restore services to
geographically dispersed customers employing the application of
asymmetric bandwidth is presented.  Adequate performance for the
service is obtained using commonly-available components applied in a
novel manner.

      The backup and restore operation involves two directions of
data communication: in the outbound (backup) direction a relatively
low bandwidth is tolerable; in the inbound (restore) direction,
however, a relatively high bandwidth is required.

      This method is a three-step procedure that employs
readily-available communications bandwidth delivery devices:
  1.  Use existing communications channels (modem, telephone line) in
       the "outbound" direction for incremental backup.  The low
       bandwidth is tolerable in this direction due to the lack of
       customer demand for high speed backup.
  2.  Store the customer's backup data in an off-site location.
  3.  Use custom-recorded CD ROM for delivery of the customer's
restore
       data upon demand.  The effective communications bandwidth
       available through shipping a CD ROM is significantly higher
than
       the bandwidth available through the use of a modem, as used in
       step 1 for the backup operation.  This avoids the intolerable
       situation of using low bandwidth communications channe...