公开(公告)号：GB2487135B

公开(公告)日：2018-05-09

申请号：GB201200428

申请日：2010-09-13

Applicant: IBM

Inventor： ANGELIKI PANTAZI ,  EVANGELOS ELEFTHERIOU ,  JENS JELITTO ,  NHAN XUAN BUI

IPC: G11B5/584

Abstract: Various embodiments for addressing time-varying periodic disturbances in a servo control system are provided. Each of a plurality of coefficients is updated based on an estimation of at least one disturbance frequency. The updated plurality of coefficients is provided to at least one peak filter modifying an input signal of the servo control system. The peak filter is operable in view of the updated plurality of coefficients to cancel at least one of the time-varying periodic disturbances.

公开(公告)号：GB2490412B

公开(公告)日：2017-12-13

申请号：GB201207226

申请日：2011-01-07

Applicant: IBM

Inventor： ROMAN PLETKA ,  EVANGELOS ELEFTHERIOU ,  ROBERT HAAS ,  XIAO-YU HU ,  YU-CHENG HSU ,  LOKESH MOHAN GUPTA ,  JOSEPH SMITH HYDE II ,  MICHAEL THOMAS BENHASE ,  ALFRED EMILIO SANCHEZ ,  KEVIN JOHN ASH

IPC: G06F12/0866

Abstract: An I/O enclosure module is provided with one or more I/O enclosures having a plurality of slots for receiving electronic devices. A host adapter is connected a first slot of the I/O enclosure module and is configured to connect a host to the I/O enclosure. A device adapter is connected to a second slot of the I/O enclosure module and is configured to connect a storage device to the I/O enclosure module. A flash cache is connected to a third slot of the I/O enclosure module and includes a flash-based memory configured to cache data associated with data requests handled through the I/O enclosure module. A primary processor complex manages data requests handled through the I/O enclosure module by communicating with the host adapter, device adapter, and flash cache to manage to the data requests.