International Business Machines Corporation

Michael C Cox

Donna N Dillenberger

James Willis Pickel

Jeffrey William Josten

Eugene P Hefferon

Martin W Sachs

Charles E Hackett

Richard Cwiakala

Karl H Hoppe

Robert J Gallagher

Gary A Fisher, Sr

Kathleen M Walsh

John C Goodyear

Peter I Kania

Jean-Louis Fava

A business application may provide a secure ledger update while maintaining anonymity and security from unauthorized third parties. One example may include receiving a new entry transaction to save data in a database/ledger. The example may also include receiving a request to add a record stored in a database with a new entry, adding the record by inserting the new entry, and enabling the new entry to be unchangeable from subsequent modification attempts based on an immutable attribute.

Database management system shared ledger support

In one embodiment, the invention provides a method of configuring a migration from a plurality of distributed virtual servers to a system of blades, the method comprising: identifying among the plurality of distributed virtual servers a plurality of candidate virtual servers for inclusion in the migration; collecting performance data for each candidate virtual server; consolidating the performance data for each candidate virtual server into a usage profile; normalizing the usage profile to allow representation of a statistical measure of resource usage by the candidate virtual server; and constructing a configuration for the plurality of candidate virtual servers within the system of blades.

Server migration

A computer system, including at least one host (processor and operating system), a channel subsystem and at least one switch (together with an associated switch controller) for switchably connecting an I/O device (together with an associated I/O device control unit) to a host via said channel subsystem, in combination with means for dynamically managing I/O connectivity in said computer from each host. The I/O manager's functions are centralized at the host level across the computer system. Each host is responsible for an instance of the manager. According to the preferred embodiment of the invention the computer system, I/O manager combination includes: (a) first means, located within each switch, for providing direct host access to the switch controller associated with a given switch; (b) second means, included in each host level instance of the manager, for automatically and dynamically determining the current I/O configuration and connectivity of each host; (c) third means, included in each host level instance of the manager, for performing System Integrated Switching (i.e., switching where any instance of the I/O manager can veto a proposed configuration change) and (d) fourth means, included in each host level instance of the manager, for insuring the integrity of the I/O connectivity database, through the use of an interlock mechanism, in a multiuser environment where each user can enter multiple part commands and processes concurrently.

Methods and apparatus for dynamically managing input/output (I/O)

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Ijamsville, MD, United States of America

Michael C Cox