Storage apparatus

Details Storage apparatus Storage apparatus

2008-01-15

2008-01-15

Iqbal, Nadeem (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S042000

Reexamination Certificate

active

07320093

ABSTRACT:
This invention provides a storage apparatus which can avoid a data lost even when a short-circuit fault occurs in a power source line which is not made redundant for a plurality of hard disk drives. In the storage apparatus, a storage control unit comprises a host interface control unit, a disk interface control unit, a cache memory, and a data transfer unit, and a storage unit includes poly switches provided for each of the power source lines to a plurality of hard disk drives and a power source line monitor circuit for monitoring the voltage of the power source line. When the voltage abnormality due to a voltage drop of the power source line is detected by the power source line monitor circuit, a data line connecting the disk interface control unit and the plurality of hard disk drives is cut off.

REFERENCES:
patent: 5537584 (1996-07-01), Miyai et al.
patent: 5588144 (1996-12-01), Inoue et al.
patent: 5596708 (1997-01-01), Weber
patent: 6038618 (2000-03-01), Beer et al.
patent: 000964336 (1999-12-01), None

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