公开(公告)号：GB2603350A

公开(公告)日：2022-08-03

申请号：GB202204060

申请日：2020-09-02

Applicant: IBM

Inventor： ROGER HATHORN ,  PATRICIA DRIEVER ,  CHRISTOPHER COLONNA ,  MOOHENG ZEE ,  JOHN FLANAGAN

IPC: G06F21/60 ,  G06F21/44

Abstract: A host port is enabled for security. The host port performs Input/Output (I/O) in plaintext on a path between the host port and a storage port, in response to determining that an audit mode indicator has been enabled to allow I/O even if authentication or security association negotiation between the host port and the storage port cannot be completed successfully. Concurrently with performing of I/0 in plaintext on the path, the host port enables encryption of data for I/O on the path.

公开(公告)号：GB2601461A

公开(公告)日：2022-06-01

申请号：GB202204041

申请日：2020-09-02

Applicant: IBM

Inventor： ROGER HATHORN ,  PATRICIA DRIEVER ,  CHRISTOPHER COLONNA ,  EVAN RIVERA ,  JOHN FLANAGAN

IPC: G06F21/62 ,  G06F13/20 ,  G06F21/85

Abstract: A host port is enabled for security. In response to a determination by the host port that authentication or security association negotiation with a storage port cannot be completed successfully, the host port determines whether an audit mode indicator has been enabled in a login response from the storage port. The host port preserves input/output (I/O) access to the storage port based on determining whether the audit mode indicator has been enabled in the login response from the storage port.

公开(公告)号：GB2586398A

公开(公告)日：2021-02-17

申请号：GB202015329

申请日：2019-02-27

Applicant: IBM

Inventor： LOKESH GUPTA ,  MATTHEW BORLICK ,  ROGER HATHORN

IPC: G06F17/00

Abstract: In one aspect of the present description, safe data commit scan operations of individual data storage systems of a distributed data storage system may be synchronized to reduce the occurrence of reductions in input/output (I/O) response times. In one embodiment, a set of safe data commit scan operations of the individual data storage systems of a distributed data storage system are synchronously timed to substantially overlap in time within a single synchronized safe data commit scan set interval to reduce or eliminate the occurrences of reductions in input/output response times outside the synchronized safe data commit scan set interval. Other features and aspects may be realized, depending upon the particular application.

公开(公告)号：GB2555324B

公开(公告)日：2019-09-04

申请号：GB201720413

申请日：2016-05-13

Applicant: IBM

Inventor： ROGER HATHORN ,  BRET WAYNE HOLLEY ,  MATTHEW JOSEPH KALOS

IPC: G06F13/16 ,  G06F3/06 ,  G06F13/36 ,  G06F13/40 ,  H04L12/801

Abstract: A channel of a host computational device sends a command to transfer data to a control unit included in a storage controller. The channel of the host computational device receives a number of buffer credits from the control unit for communication with the control unit, where the number of buffer credits that is received is based on the control unit monitoring a number of transfer ready operations and a number of retry operations during a monitoring period while communicating with a plurality of channels that includes the channel.

公开(公告)号：GB2537570B

公开(公告)日：2018-08-15

申请号：GB201613990

申请日：2015-02-03

Applicant: IBM

Inventor： ROGER HATHORN ,  PATRICIA DRIEVER ,  HENRY JOSEPH MAY ,  BHARATH BHIRTHI SOMAYAJI ,  DANIEL SENTLER ,  SUDHEER YELANDURU

IPC: H04L45/42

Abstract: Provided are computer program product, system, and method for determining whether a short or long message format is used to communicate zone information in a network. One large zone is implemented for end devices coupled to ports of data forwarders. A first formatted zoning distribution message is generated for the data forwarders identifying the data forwarder and ports on the data forwarders in the one large zone in response to determining that the data forwarder supports the short message format. A second formatted zoning distribution message is generated identifying the data forwarder, the ports on the data forwarders, and additional fields of information on the ports not included in the first formatted zoning distribution message in response to determining that the data forwarder does not support the short message format; and sending the generated first formatted or second formatted zoning distribution message to the data forwarder.

公开(公告)号：GB2555324A

公开(公告)日：2018-04-25

申请号：GB201720413

申请日：2016-05-13

Applicant: IBM

Inventor： ROGER HATHORN ,  BRET WAYNE HOLLEY ,  MATTHEW JOSEPH KALOS

IPC: G06F13/16 ,  G06F3/06 ,  G06F13/36 ,  G06F13/40 ,  H04L12/801

Abstract: A channel of a host computational device sends a command to transfer data to a control unit included in a storage controller. The channel of the host computational device receives a number of buffer credits from the control unit for communication with the control unit, where the number of buffer credits that is received is based on the control unit monitoring a number of transfer ready operations and a number of retry operations during a monitoring period while communicating with a plurality of channels that includes the channel.

公开(公告)号：GB2532640B

公开(公告)日：2018-04-04

申请号：GB201602460

申请日：2014-06-23

Applicant: IBM

Inventor： HENRY JOSEPH MAY ,  ROGER HATHORN ,  PATRICIA DRIEVER ,  CHRISTOPH RAISCH ,  DANIEL SENTLER

IPC: H04L12/931 ,  H04L12/911 ,  H04L12/939