Resynchronization of count key data with its corresponding...

Details Resynchronization of count key data with its corresponding... Resynchronization of count key data with its corresponding...

2006-02-14

2006-02-14

Sparks, Donald (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S118000, C711S162000, C709S203000

Reexamination Certificate

active

07000083

ABSTRACT:
A storage system, method of managing a storage system and program product for managing a storage system. Cache fast write (CFW) modified data may be provided to cache in count-key-data (CKD) tracks with associated meta data. A synchronization flag is included on a storage device with associated meta data for each CKD track stored. The cache directory control block (CDCB) includes a CDCB synchronization flag for each CKD track in cache memory. A mismatch in the synchronization flags from a failure during a transfer to storage indicates a storage device loss of synchronization between an accessed CKD track and stored associated meta data.

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Technical Support Apr. 2001 “What's Real? Device Formats and Data Types”.
“Count-Key-Data Disks” e-mail from Dick Wilmot, Jun. 24, 1994.

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