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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 25. Отображено 21.
08-09-2016 дата публикации

SELECTIVE COPYING OF TRACK DATA THROUGH PEER-TO-PEER REMOTE COPY

Номер: US20160261650A1
Автор: Gavin S. Johnson, Michael J. Koester, Kevin L. Miner, JOHNSON GAVIN S, KOESTER MICHAEL J, MINER KEVIN L, Johnson Gavin S., Koester Michael J., Miner Kevin L.
Принадлежит:

In one embodiment, a computer-implemented method includes: receiving a request to establish a Peer-to-Peer Remote Copy (PPRC) relationship between a primary storage system and a secondary storage system; and copying one or more data tracks of a primary storage device in the primary storage system to the secondary storage system without copying at least one other data track of the primary storage device to the secondary storage system. The one or more data tracks of the primary storage device comprise one or more data tracks of a first characteristic. Other portions of the primary storage device comprise one or more other data tracks of a second characteristic. Tracks of the first characteristic may include valid data records, while tracks of the second characteristic may include invalid data records and/or empty tracks. Corresponding systems and computer program products are also disclosed. 1. A primary storage system , comprising:at least one primary storage device;at least one controller;an interface for a hardwire connection that is adapted to communicate data between the primary storage system and a secondary storage system; and receive a request to establish a Peer-to-Peer Remote Copy (PPRC) relationship between the primary storage system and the secondary storage system;', 'set a path between the primary storage system and the secondary storage system via the hardwire connection in response to receiving the request;', 'receive a memory map;', 'establish the PPRC relationship between the primary storage system and the secondary storage system in response to receiving the memory map; and', 'copy, based at least in part on the memory map, one or more data tracks of the primary storage device to the secondary storage system without copying at least one other data track of the primary storage device to the secondary storage system; and, 'logic integrated with and/or executable by the at least one controller, the logic being configured towherein the one or more data ...

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Номер записи: 1
27-02-2018 дата публикации

Monitoring of residual encrypted data to improve erase performance on a magnetic medium

Номер: US0009904488B2
Автор: Erika M. Dawson, Scott M. Fry, Paul M. Greco, Gavin S. Johnson, Joel K. Lyman, Jon A. Lynds, Cory G. Smith, DAWSON ERIKA M, FRY SCOTT M, GRECO PAUL M, JOHNSON GAVIN S, LYMAN JOEL K, LYNDS JON A, SMITH CORY G, Dawson Erika M., Fry Scott M., Greco Paul M., Johnson Gavin S., Lyman Joel K., Lynds Jon A., Smith Cory G.
Принадлежит: International Business Machines Corporation, IBM

In one embodiment, a product includes a magnetic medium having written thereon data in a data track. The data includes encrypted data written over unencrypted data. An indicator of a physical position on the magnetic medium that corresponds to an end of the encrypted data is stored on the product. A product according to another embodiment includes a magnetic medium having written thereon data in a data track. The data includes encrypted data written over unencrypted data. A portion of the unencrypted data is located before the encrypted data on the medium. An indicator of a physical position on the magnetic medium that corresponds to a beginning of the encrypted data is stored on the product.

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Номер записи: 2
02-08-2016 дата публикации

Monitoring of residual encrypted data to improve erase performance on a magnetic medium

Номер: US0009406335B2
Автор: Erika M. Dawson, Scott M. Fry, Paul M. Greco, Gavin S. Johnson, Joel K. Lyman, Jon A. Lynds, Cory G. Smith, DAWSON ERIKA M, FRY SCOTT M, GRECO PAUL M, JOHNSON GAVIN S, LYMAN JOEL K, LYNDS JON A, SMITH CORY G, Dawson Erika M., Fry Scott M., Greco Paul M., Johnson Gavin S., Lyman Joel K., Lynds Jon A., Smith Cory G.
Принадлежит: International Business Machines Corporation, IBM

In one embodiment, a system includes a processor and logic integrated with and/or executable by the processor, the logic being configured to: determine a physical position on a magnetic medium that corresponds to an end of an encrypted data set; store an indicator of the physical position on the magnetic medium and/or a memory coupled thereto; and cause obscuring of an unencrypted data set positioned after the physical position without overwriting the encrypted data set. In another embodiment, a computer program product includes a computer readable storage medium and program instructions embodied therewith, the program instructions readable and/or executable by the processor to cause the processor to: read an indicator of a physical position on a magnetic medium that corresponds to an end of an encrypted data set; and cause obscuring of an unencrypted data set positioned after the physical position without overwriting the encrypted data set.

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Номер записи: 3
10-11-2016 дата публикации

MONITORING OF RESIDUAL ENCRYPTED DATA TO IMPROVE ERASE PERFORMANCE ON A MAGNETIC MEDIUM

Номер: US20160328181A1
Автор: Erika M. Dawson, Scott M. Fry, Paul M. Greco, Gavin S. Johnson, Joel K. Lyman, Jon A. Lynds, Cory G. Smith, DAWSON ERIKA M, FRY SCOTT M, GRECO PAUL M, JOHNSON GAVIN S, LYMAN JOEL K, LYNDS JON A, SMITH CORY G, Dawson Erika M., Fry Scott M., Greco Paul M., Johnson Gavin S., Lyman Joel K., Lynds Jon A., Smith Cory G.
Принадлежит: International Business Machines Corp

In one embodiment, a product includes a magnetic medium having written thereon data in a data track. The data includes encrypted data written over unencrypted data. An indicator of a physical position on the magnetic medium that corresponds to an end of the encrypted data is stored on the product. A product according to another embodiment includes a magnetic medium having written thereon data in a data track. The data includes encrypted data written over unencrypted data. A portion of the unencrypted data is located before the encrypted data on the medium. An indicator of a physical position on the magnetic medium that corresponds to a beginning of the encrypted data is stored on the product.

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Номер записи: 4
15-08-2017 дата публикации

Tape volume access block having data set information stored therein

Номер: US0009733839B2
Автор: Gavin S. Johnson, Jon A. Lynds, JOHNSON GAVIN S, LYNDS JON A, Johnson Gavin S., Lynds Jon A.
Принадлежит: International Business Machines Corporation, IBM

In one embodiment, an apparatus includes a processor and logic integrated with and/or executable by the processor. The logic is configured to position a magnetic tape volume to a position corresponding to an end of a last data set stored to the magnetic tape volume, and read an existing tape volume access block (TVAB) from the magnetic tape volume in response to a determination that the existing TVAB is stored to the magnetic tape volume. The logic is also configured to write one or more data sets to the magnetic tape volume subsequent to reading the existing TVAB in response to the determination that the existing TVAB is stored to the magnetic tape volume, determine metadata corresponding to the one or more written data sets, and update the existing TVAB with the metadata corresponding to the one or more written data sets to produce an updated TVAB.

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Номер записи: 5
21-06-2012 дата публикации

MONITORING INPUT/OUTPUT OPERATIONS TO SPECIFIC STORAGE LOCATIONS

Номер: US20120159006A1
Автор: Johnson Gavin S., Koester Michael J., Paveza John R., Van Noorden Carrie J.
Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

Provided are techniques for storing one or more storage rules for each of one or more storage locations, along with one or more actions to be taken for each storage rule that is violated, intercepting an I/O operation issued to the storage subsystem, and determining whether the I/O operation violates one or more of the storage rules. In response to determining that the I/O operation violates one or more of the storage rules, an application that issued the I/O operation is identified and each of the one or more actions associated with the one or more violated storage rules are performed. 1. A method , comprising:storing one or more storage rules for each of one or more storage locations, along with one or more actions to be taken for each storage rule that is violated;intercepting an I/O operation issued to a storage subsystem;determining whether the I/O operation violates one or more of the storage rules; and identifying an application that issued the I/O operation; and', 'performing each of the one or more actions associated with the one or more of the violated storage rules., 'in response to determining that the I/O operation violates one or more of the storage rules,'}2. The method of claim 1 , wherein a storage rule identifies a storage location and a format or pattern of data at that storage location.3. The method of claim 1 , wherein the I/O operation is one of a read operation and a write operation.4. The method of claim 1 , further comprising:monitoring Input/Output (I/O) operations issued to the storage subsystem.5. The method of claim 1 , further comprising:in response to determining that the I/O operation does not violate one or more of the storage rules, allowing the I/O operation to pass to the storage subsystem.6. The method of claim 1 , wherein the one or more actions are selected from a group of actions comprised of: blocking the I/O operation from passing to the storage subsystem claim 1 , notifying a user of the violating I/O operation and the ...

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Номер записи: 6
17-01-2013 дата публикации

DELETED DATA RECOVERY IN DATA STORAGE SYSTEMS

Номер: US20130018852A1
Автор: Barton Leslie A., Johnson Gavin S., Koester Michael J., Van Noorden Carrie J.
Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

In one embodiment, a system includes a data storage device for storing one or more storage volumes, logic adapted for associating an indicator with a data set on the one or more storage volumes, wherein the indicator is in a first state indicating that the data set is accessible, logic adapted for storing the indicator associated with the data set in a data set descriptor record, wherein the record is stored in at least one mapping of the one or more storage volumes, logic adapted for receiving a request to delete the data set, logic adapted for changing the indicator to a second state indicating that the data set is inaccessible in response to the request to delete the data set, with the proviso that the data set is unchanged, logic adapted for receiving a request to restore the deleted data set, and logic adapted for restoring the indicator from the second state to the first state in response to the request to restore the deleted data set.

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Номер записи: 7
07-11-2013 дата публикации

System utility for controling data synchronization in a tape data storage system

Номер: US20130293978A1
Автор: Gavin S. Johnson, Jon A. Lynds
Принадлежит: International Business Machines Corp

A computer-implemented method, apparatus and computer-program product for writing data to a tape data storage medium. The method comprises providing a system service that an application invokes to handle data synchronization events associated with writing a group of files to the tape medium; keeping track of the files and data blocks in each file while writing the files to the tape medium based on file boundaries; and responsive to a data writing failure, invoking the system service to determine the files affected by the data writing failure.

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Номер записи: 8
23-01-2014 дата публикации

Monitoring of residual encrypted data to improve erase performance on a magnetic medium

Номер: US20140022663A1
Автор: Cory G. Smith, Erika M. Dawson, Gavin S. Johnson, Joel K. Lyman, Jon A. Lynds, Paul M. Greco, Scott M. Fry
Принадлежит: International Business Machines Corp

In one embodiment, a system includes a processor, logic in the processor and/or memory configured to determine a physical position on a magnetic medium that corresponds to an end of encrypted data written over residual unencrypted data, and logic configured to store an indicator of the physical position on at least one of the magnetic medium and a memory coupled thereto. In another embodiment, a method includes determining a physical position on a magnetic medium that corresponds to an end of encrypted data written over residual unencrypted data, storing an indicator of the physical position on at least one of the magnetic medium and a memory coupled thereto.

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Номер записи: 9
23-01-2014 дата публикации

Monitoring of extent of writing of unobscured data to improve erase performance on a magnetic medium

Номер: US20140025885A1
Автор: Cory G. Smith, Duke A. Lee, Erika M. Dawson, Gavin S. Johnson, Joel K. Lyman, Jon A. Lynds, Paul M. Greco, Scott M. Fry
Принадлежит: International Business Machines Corp

A system according to one embodiment includes a processor; logic in the processor and/or a memory configured to determine a furthest physical position on a magnetic medium that unobscured data has been written to; and logic configured to store an indicator of the furthest physical position on at least one of the magnetic medium and a memory coupled thereto. A system according to another embodiment includes a processor; logic in the processor and/or a memory configured to receive an instruction to obscure data on a magnetic medium; logic configured to read an indicator of a furthest physical position on the magnetic medium that unobscured data has been written to; and logic configured to cause obscuring of the unobscured data on the magnetic medium, and terminating the obscuring upon reaching the physical position in the indicator.

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Номер записи: 10
30-01-2014 дата публикации

SYNCHRONOUS MODE REPLICATION TO MULTIPLE CLUSTERS

Номер: US20140032957A1
Автор: Beeston Ralph T., Dawson Erika M., Johnson Gavin S., KATORI Katsuyoshi, SWINGLER Joseph M.
Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

Provided are a computer program product, system, and method for synchronous mode replication to multiple clusters receiving a write to a volume from a host. A received write is cached in a memory. A determination is made of a replication rule indicating one of a plurality of replication modes for a first cluster and a second cluster used for replication for the write, wherein one of the replication modes comprises a synchronous mode. A determination is made that the replication rule indicates a synchronous mode for the first and the second clusters. The write is transmitted from the memory to the first cluster to store in a first non-volatile storage of the first cluster and to the second cluster to store in a second non-volatile storage in response to determining that the replication rule indicates the synchronous mode. 1. A computer program product for replicating data from a host to at least a first cluster and second cluster , the computer program product comprising a computer readable storage medium having computer readable program code embodied therein that executes to perform operations , the operations comprising:receiving a write to a volume from a host;caching the received write in a memory;determining a replication rule indicating one of a plurality of replication modes for the first cluster and the second cluster used for replication for the write, wherein one of the replication modes comprises a synchronous mode;determining that the replication rule indicates a synchronous mode for the first and the second clusters; andtransmitting the write from the memory to the first cluster to store in a first non-volatile storage of the first cluster and to the second cluster to store in a second non-volatile storage in response to determining that the replication rule indicates the synchronous mode.2. The computer program product of claim 1 , wherein the operations further comprise:initiating a synchronization operation to synchronize writes in response to a host ...

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Номер записи: 11
07-01-2016 дата публикации

TAPE VOLUME ACCESS BLOCK HAVING DATA SET INFORMATION STORED THEREIN

Номер: US20160004439A1
Автор: Johnson Gavin S., Lynds Jon A.
Принадлежит:

In one embodiment, an apparatus includes a processor and logic integrated with and/or executable by the processor. The logic is configured to position a magnetic tape volume to a position corresponding to an end of a last data set stored to the magnetic tape volume, and read an existing tape volume access block (TVAB) from the magnetic tape volume in response to a determination that the existing TVAB is stored to the magnetic tape volume. The logic is also configured to write one or more data sets to the magnetic tape volume subsequent to reading the existing TVAB in response to the determination that the existing TVAB is stored to the magnetic tape volume, determine metadata corresponding to the one or more written data sets, and update the existing TVAB with the metadata corresponding to the one or more written data sets to produce an updated TVAB. 1. An apparatus , comprising a processor and logic integrated with and/or executable by the processor , the logic being configured to:position a magnetic tape volume to a position corresponding to an end of a last data set stored to the magnetic tape volume;read an existing tape volume access block (TVAB) from the magnetic tape volume in response to a determination that the existing TVAB is stored to the magnetic tape volume;write one or more data sets to the magnetic tape volume subsequent to reading the existing TVAB in response to the determination that the existing TVAB is stored to the magnetic tape volume;determine metadata corresponding to the one or more written data sets; andupdate the existing TVAB with the metadata corresponding to the one or more written data sets to produce an updated TVAB.2. The apparatus as recited in claim 1 , wherein the existing TVAB is read prior to writing the one or more data sets to the magnetic tape volume claim 1 , wherein the logic configured to update the existing TVAB is configured to:write the existing TVAB to a storage memory; andupdate the existing TVAB in the storage ...

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Номер записи: 12
14-08-2014 дата публикации

SYSTEMS, METHODS AND COMPUTER PROGRAM PRODUCTS FOR SELECTIVE COPYING OF TRACK DATA THROUGH PEER-TO-PEER REMOTE COPY

Номер: US20140229693A1
Автор: Johnson Gavin S., Koester Michael J., Miner Kevin L.
Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

In one embodiment, a primary storage system, includes: logic integrated with and/or executable by at least one controller, the logic being adapted to: receive a request to establish a Peer-to-Peer Remote Copy (PPRC) relationship between a primary storage system and a secondary storage system; set a path between the primary storage system and the secondary storage system via a hardwire connection in response to receiving the request; receive a memory map; establish the PPRC relationship between the primary storage system and the secondary storage system in response to receiving the memory map; and copy, based at least in part on the memory map, one or more data tracks of a primary storage device to the secondary storage system without copying at least one other data track of the primary storage device to the secondary storage system. 1. A primary storage system , comprising:at least one primary storage device;at least one controller;an interface for a hardwire connection that is adapted to communicate data between the primary storage system and a secondary storage system; and receive a request to establish a Peer-to-Peer Remote Copy (PPRC) relationship between the primary storage system and the secondary storage system;', 'set the path between the primary storage system and the secondary storage system via the hardwire connection in response to receiving the request;', 'receive a memory map;', 'establish the PPRC relationship between the primary storage system and the secondary storage system in response to receiving the memory map; and', 'copy, based at least in part on the memory map, one or more data tracks of the primary storage device to the secondary storage system without copying at least one other data track of the primary storage device to the secondary storage system., 'logic integrated with and/or executable by the at least one controller, the logic being adapted to2. The system as recited in claim 1 , wherein an amount of time required to copy the one or ...

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Номер записи: 13
02-07-2015 дата публикации

Monitoring of residual encrypted data to improve erase performance on a magnetic medium

Номер: US20150187383A1
Автор: Cory G. Smith, Erika M. Dawson, Gavin S. Johnson, Joel K. Lyman, Jon A. Lynds, Paul M. Greco, Scott M. Fry
Принадлежит: International Business Machines Corp

In one embodiment, a system includes a processor and logic integrated with and/or executable by the processor, the logic being configured to: determine a physical position on a magnetic medium that corresponds to an end of an encrypted data set; store an indicator of the physical position on the magnetic medium and/or a memory coupled thereto; and cause obscuring of an unencrypted data set positioned after the physical position without overwriting the encrypted data set. In another embodiment, a computer program product includes a computer readable storage medium and program instructions embodied therewith, the program instructions readable and/or executable by the processor to cause the processor to: read an indicator of a physical position on a magnetic medium that corresponds to an end of an encrypted data set; and cause obscuring of an unencrypted data set positioned after the physical position without overwriting the encrypted data set.

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Номер записи: 14
09-07-2015 дата публикации

TAPE VOLUME ACCESS BLOCK HAVING DATA SET INFORMATION STORED THEREIN

Номер: US20150193145A1
Автор: Johnson Gavin S., Lynds Jon A.
Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

In one embodiment, an apparatus includes a processor and logic integrated with and/or executable by the processor, the logic being configured to write one or more data sets to a magnetic tape volume, the magnetic tape volume being configured to store data thereon, determine metadata corresponding to the one or more written data sets, and write the metadata corresponding to the one or more written data sets to a tape volume access block (TVAB) stored to the magnetic tape volume after a last written data set. In yet another embodiment, a method for managing a magnetic tape volume includes auditing a magnetic tape volume to determine a plurality of data sets stored thereto, determining metadata corresponding to the plurality of data sets, storing the metadata corresponding to the plurality of data sets to a TVAB, and writing the TVAB to the magnetic tape volume after a last written data set. 1. An apparatus , comprising a processor and logic integrated with and/or executable by the processor , the logic being configured to:position a magnetic tape volume to a position corresponding to an end of a last data set stored to the magnetic tape volume, the magnetic tape volume being configured to store data thereon;read an existing tape volume access block (TVAB) from the magnetic tape volume when the existing TVAB is stored to the magnetic tape volume;write one or more data sets to the magnetic tape volume subsequent to reading the existing TVAB when the existing TVAB is stored to the magnetic tape volume;determine metadata corresponding to the one or more written data sets; andwrite the metadata corresponding to the one or more written data sets to the (TVAB) stored to the magnetic tape volume after a last written data set.2. The apparatus as recited in claim 1 , wherein the logic is further configured to:write the existing TVAB to a storage memory;update the existing TVAB in the storage memory with metadata corresponding to the one or more data sets to be written; andwrite ...

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Номер записи: 15
20-08-2015 дата публикации

SELECTIVE COPYING OF TRACK DATA THROUGH PEER-TO-PEER REMOTE COPY

Номер: US20150234600A1
Автор: Johnson Gavin S., Koester Michael J., Miner Kevin L.
Принадлежит:

In one embodiment, a method includes receiving a request to establish a Peer-to-Peer Remote Copy (PPRC) relationship between a primary storage system and a secondary storage system, and copying one or more data tracks of a primary storage device in the primary storage system to the secondary storage system without copying at least one other data track of the primary storage device to the secondary storage system. The one or more data tracks of the primary storage device comprise one or more data tracks of a first characteristic. Other portions of the primary storage device comprise one or more other data tracks of a second characteristic. 1. A primary storage system , comprising:at least one primary storage device;at least one controller; and receive a request to establish a Peer-to-Peer Remote Copy (PPRC) relationship between the primary storage system and a secondary storage system;', 'copy one or more data tracks of the primary storage device to the secondary storage system without copying at least one other data track of the primary storage device to the secondary storage system,', 'wherein the one or more data tracks of the primary storage device comprise data tracks of a first characteristic, and', 'wherein other portions of the primary storage device comprise one or more other data tracks of a second characteristic., 'logic integrated with and/or executable by the at least one controller, the logic being configured to2. The system as recited in claim 1 , wherein an amount of time required to copy the one or more data tracks of the primary storage device is directly proportional to a number of data tracks of the primary device to be copied to the secondary storage system.3. The system as recited in claim 1 , wherein the data tracks of the first characteristic comprise valid data records claim 1 , and invalid data records; and', 'empty data tracks., 'wherein the data tracks of the second characteristic comprise one or more of4. The system as recited in claim 3 ...

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Номер записи: 16
20-11-2014 дата публикации

ACCIDENTAL SHARED VOLUME ERASURE PREVENTION

Номер: US20140344535A1
Автор: Johnson Gavin S., Koester Michael J., Paveza John R.
Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

Various embodiments of accidental shared volume erasure prevention include systems, methods, and/or computer program products for receiving a request to access a volume from a requesting system, determining whether the volume is associated with any system other than the requesting system, and preventing accidental erasure of the volume based on the determination. 1. A method , comprising:receiving a request to access a volume from a requesting system;determining whether the volume is associated with any system other than the requesting system; andpreventing accidental erasure of the volume based on the determination.2. The method as recited in claim 1 , wherein the preventing comprises:denying the requesting system access to the volume in response to determining the volume is associated with any system other than the requesting system; andallowing the requesting system access to the volume in response to determining the volume is not associated with any system other than the requesting system.3. The method as recited in claim 2 , wherein the request is an input/output (I/O) request built by software.wherein the request includes a fail if grouped (FIG) flag,wherein each of the determining and the preventing are performed in response to detecting the FIG flag, andwherein the denying comprises rejecting the I/O request with sense code.4. The method as recited in claim 2 , wherein the denying further comprises sending a message to the requesting system claim 2 ,wherein the message indicates the request is denied because the volume is associated with a system other than the requesting system.5. The method as recited in claim 1 , wherein the determining further comprises:determining hardware connection information for the volume; anddetermining whether the volume is in active communication with any of the other systems based on the hardware connection information,wherein the hardware connection information is determined at least in part using a lookup.6. The method as ...

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Номер записи: 17
10-12-2015 дата публикации

EXTENT-LEVEL RESERVE AND RELEASE FOR A DIRECT ACCESS STORAGE DEVICE (DASD) VOLUMES

Номер: US20150355860A1
Автор: CANDELARIA Susan K., Hardy Clint A., Johnson Gavin S., KALOS Matthew J., Koester Michael J., Paveza John R., Van Noorden Carrie J.
Принадлежит:

In one embodiment, a computer program product for managing a reserve command includes a computer readable storage medium having program code embodied therewith, the program code readable and/or executable by a processor to receive, by the processor, a request to access a data set on one or more volumes of at least one direct access storage device (DASD), the request including a reserve command, and each of the one or more volumes including a consecutive set of one or more tracks of the at least one DASD, and reserve one or more extents of the at least one DASD while reserving less than a volume of the at least one DASD and not allowing any other entity than an entity which requested the reserve to access the one or more extents of the at least one DASD that have been reserved. 1. A computer program product for managing a reserve command , the computer program product comprising a computer readable storage medium having program code embodied therewith , the program code readable and/or executable by a processor to cause the processor to:receive, by the processor, a request to access a data scion one or more volumes of at least one direct access storage device (DASD), wherein the request includes a reserve command, and wherein each of the one or more volumes includes a consecutive set of one or more tracks of the at least one DASD; andreserve, by the processor, one or more extents of the at least one DASD, wherein less than a volume of the at least one DASD is reserved, and wherein the reserve does not allow any other entity than an entity which requested the reserve to access the one or more extents of the at least one DASD that have been reserved.2. The computer program product as recited in claim 1 , wherein the program code is further readable and/or executable by the processor to cause the processor to:receive, by the processor, a release command; andrelease, by the processor, the one or more extents of the at least one DASD in response to the release command ...

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Номер записи: 18
18-02-2014 дата публикации

Monitoring input/output operations to specific storage locations

Номер: US8656066B2
Автор: Carrie J. Van Noorden, Gavin S. Johnson, John R. Paveza, Michael J. Koester
Принадлежит: International Business Machines Corp

Provided are techniques for storing one or more storage rules for each of one or more storage locations, along with one or more actions to be taken for each storage rule that is violated, intercepting an I/O operation issued to the storage subsystem, and determining whether the I/O operation violates one or more of the storage rules. In response to determining that the I/O operation violates one or more of the storage rules, an application that issued the I/O operation is identified and each of the one or more actions associated with the one or more violated storage rules are performed.

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Номер записи: 19
01-01-2002 дата публикации

Program products for repositioning an input/output device without knowledge of current positioning of the device

Номер: US6336194B1
Автор: Gavin S. Johnson, Harry M. Yudenfriend, Kirby G. Dahman, Larry R. Perry
Принадлежит: International Business Machines Corp

Repositioning within an input/output device is accomplished without any knowledge of where the input/output device is currently positioned. The input/output device is repositioned to a predetermined position, in order for a program to be retried. The predetermined position is determined from a previously executed program. The previously executed program is scanned looking for commands. For each command found, a position identifier is adjusted based upon the type of command. When the scan and adjustments are complete, the position identifier represents the predetermined position used for repositioning the input/output device.

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Номер записи: 20
07-11-2013 дата публикации

Ein Systemdienstprogramm zum Steuern der Datensynchronisierung in einem Bandsystem zur Datenspeicherung

Номер: DE102013207606A1
Автор: Gavin S. Johnson, Jon A. Lynds
Принадлежит: International Business Machines Corp

Ein computerimplementiertes Verfahren, Vorrichtung und Computerprogrammprodukt zum Schreiben von Daten auf ein Bandmedium zur Datenspeicherung. Das Verfahren weist die Bereitstellung eines von einer Anwendung aufzurufenden Systemdienstes auf, um Datensynchronisierungsereignisse zu verwalten, die zum Schreiben einer Gruppe von Dateien auf das Bandmedium gehören; Dateien und Datenblöcke in jeder Datei beim Schreiben der Dateien auf das Bandmedium zu verfolgen; und in Reaktion auf einen Datenschreibfehler den Systemdienst aufzurufen, um die von dem Datenschreibfehler betroffenen Dateien zu ermitteln.

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Номер записи: 21