Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Patent
1998-10-06
2000-07-18
Wright, Norman Michael
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
714 40, 714 47, 714 49, G06F 1300
Patent
active
060922168
ABSTRACT:
A disk controlling apparatus creates sense data indicating the contents of an error and writes it into an intermediate buffer provided within the disk controlling apparatus together with the record normally read when a key portion or a data portion constituting a record is not normally read. The disk controlling apparatus searches the intermediate buffer for desired record, reads and informs an error while taking the sense data into consideration for each record. The disk controlling apparatus stores a write address in a memory at the time of writing data, and when data are normally written the write address is eliminated from the memory, while holding the address when data are not normally written. At the time of reading data, if the address which agrees with the read address is stored in the memory, the disk controlling apparatus reports an error to a host apparatus. The disk controlling apparatus further calculates the busy ratio indicating the rate at which each channel adapters is used for I/O processing, and data is transmitted and received to and from the host apparatus through the channel adapter which has the lowest busy ratio.
REFERENCES:
patent: 5210860 (1993-05-01), Pfeffer et al.
patent: 5390186 (1995-02-01), Murata et al.
patent: 5459856 (1995-10-01), Inoue
patent: 5463767 (1995-10-01), Joichi et al.
patent: 5613066 (1997-03-01), Matsushima et al.
Microsoft Press Computer Dictionary--Second Edition--p. 39 and p. 271.
Computer System and Network Security; Gregory B. White, Eric A. Fisch and Udo W. Pooch; CRC Press; Chapter 2--pp. 9-10.
Ishikawa Jun
Katayama Jun
Kobayashi Tohru
Kumasawa Tadashi
Murano Shoichi
Fujitsu Limited
Wright Norman Michael
LandOfFree
Disk controlling apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Disk controlling apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk controlling apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2049553