US 6691139

Patent Overview — US6691139B2

Title: "Recreation of archives at a disaster recovery site"

Patent number / application: US6691139B2; application US09/774,839.

Inventors: Shivaji Ganesh and Ramesh Kavanappillil.

Assignee: Original assignee Hewlett Packard Development Co LP (current assignee listed as Valtrus Innovations Ltd in the supplied text).

Key dates: Priority date 2001-01-31; filed 2001-01-31; published as US20020103816A1 on 2002-08-01; granted 2004-02-10. Adjusted expiration 2021-11-30; legal status "Expired - Lifetime."

Purpose and plain-language scope: The patent concerns recreating archives at a disaster recovery site. The supplied excerpt identifies recurring prior-art keywords—"standby," "archive," "log," "database," "site"—indicating a fault-tolerance/disaster-recovery approach in which archived data is regenerated at a standby location. It is classified chiefly under G06F11/07 (responding to faults, e.g. fault tolerance), with subclasses covering redundant persistent mass storage by mirroring (G06F11/2056, G06F11/2071), point-in-time backup and restoration (G06F11/1446), management of the backup/restore process for networked environments (G06F11/1464), logging of persistent data for recovery (G06F11/1471), backup/restore with selection of backup contents (G06F11/1451), mirroring while ensuring consistency (G06F11/2064), maintaining the standby controller/processing unit updated (G06F11/2097), and database-specific techniques (G06F2201/80). Together these classifications indicate the claimed subject matter relates to maintaining a consistent standby copy of archived data and reconstructing that archive at a recovery site.

Source: https://patents.google.com/patent/[US6691139](/patent/US6691139)/en

What the excerpt does not establish: It contains no claim language, no written description, no abstract, and no cited prior-art references, so the precise claimed scope, the specific mechanisms for archive recreation, and any comparison to prior art cannot be verified from the supplied material. The listed current assignee, legal status, and expiration are noted only as stated in the source and are not verified here. Litigation, ownership transfers, validity, and prior art were not researched per instruction. Independent confirmation from the full patent document would be required for any claim-scope statement.