I/O write request handling in a storage system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9342460
APP PUB NO 20140195738A1
SERIAL NO

14132087

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An I/O write request handling mechanism in a storage system comprising at least one normal storage device and at least one cache device is provided. For each received I/O write request, two parallel threads are created. A first thread attempts to execute the write operation using the at least one normal storage device without using the at least one cache device. A second thread monitors the first thread and is triggered to execute the write operation using the at least on cache device if the first thread has not finished the write operation within a given time threshold. In either case, an I/O write completion response is provided to the external device in order to avoid timing out of the write operation. The at least one cache device is freed from data written by the second thread if the first thread completes the write operation after the given time threshold.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Diederich, Michael Mainz, DE 23 98
Rueger, Erik Mainz, DE 182 727
Wolafka, Rainer Mainz, DE 45 390

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Nov 17, 2023
11.5 Year Payment $7400.00 $3700.00 $1850.00 Nov 17, 2027
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00