US 8,479,071 B2Granted

Information processing apparatus, history management method

AssigneeFujitsu Limited

InventorKazuya Takaku

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Abstract

An information processing apparatus according to the present invention includes a controller for dividing data into a plurality of divided-data; a plurality of storage units for storing the plurality of divided-data, respectively; a plurality of storage controllers for writing the divided-data into the corresponding storage unit or reading out the divided-data from the respective storage units; a plurality of history storage units for storing histories of the operation of the corresponding storage controllers, respectively; an error detector for detecting an error in the divided-data; an error correction controller for controlling correction of the error; and a plurality of history controller for controlling update of the histories in the corresponding history storage units, respectively upon correction of the error.

Claims8

Dependent claims

An information processing apparatus comprising:

a system controller configured to divide data into a plurality of divided-data;
a plurality of storage units configured to store the plurality of divided-data, respectively;
and
a plurality of storage controllers configured to write the divided-data into corresponding storage units or reading out the divided-data from the corresponding storage units,
each storage controller including:
a history storage unit configured to store histories of an operation of the corresponding storage controller, memory addresses being created in correspondence with the histories;
an error detector configured to detect an error in the divided-data;
and
a history controller configured to control an update of the histories in the corresponding history storage units, and
a scrub controller configured to control an operation of correcting and rewriting the divided-data after reading from a memory address among the memory addresses that is same as a memory address having an error, when one of the plurality of storage controllers detects a memory error, and
wherein history controllers of the plurality of storage controllers are synchronously controlled based on a signal to stop the update of the histories in the plurality of storage units when the error detector of at least one of the storage controller detects the error, and the histories prior and subsequent to the detection of the error in the plurality of storage units are compared to analyze the error.

8 more elements

Dependencies are inferred from the claim text.