Title:
SPIN-UP FOR SMART DASD
Document Type and Number:
Japanese Patent JP3297395
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To efficiently execute the spin-up of a disk drive (DASD) at high speed by calculating the maximum number of devices, which can be simultaneously activated, based on the determination concerning the required power condition of a system device and the power supply ability of a system and automatically controlling the activation of the electric system.
SOLUTION: A system power control network(SPCN) microprocessor 101 respectively connects power units 102A and 102B, DASD 103A and 103B and disk drive input/output controllers(IOC) 104A and 104B. Concerning the power capacity of the respective power units 102A and 102B in the system and the power of system components such as DASD 103A and 103B and IOC 104A and 104B or the like, based on the determination of the required power condition and power supply ability of the system device, that microprocessor 101 calculates the maximum number of devices, which can be simultaneously activated, and automatically controls the activation of the electric system.
Inventors:
Nail Claire Berglund
David Irvine Verberg
David Irvine Verberg
Application Number:
JP11431199A
Publication Date:
July 02, 2002
Filing Date:
April 22, 1999
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MASCHINES CORPORATION
International Classes:
G06F1/26; G11B19/00; (IPC1-7): G06F1/26; G11B19/00
Domestic Patent References:
| JP1125571A | ||||
| JP478062A | ||||
| JP9282779A |
Attorney, Agent or Firm:
Hiroshi Sakaguchi (1 person outside)
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