Storage system and method for determining anomaly-occurring portion

摘要

In a storage system, when a recovered error occurred upon access to a storage apparatus, a data redundancy determination unit determines whether data to be accessed has redundancy. When the data is determined to have no redundancy, an anomaly-occurring portion determination unit determines that the storage apparatus is not an anomaly-occurring portion and at the same time, an error history determination unit determines whether a recovered error occurred at the time of the past access to the storage apparatus other than that of the access destination. The anomaly-occurring portion determination unit determines whether a common transmission path is the anomaly-occurring portion based on the determination result of the error history determination unit.

主权项

1. A storage system comprising:
a plurality of storage apparatuses; and a controller that accesses each of the plurality of storage apparatuses through a common transmission path and manages the plurality of storage apparatuses so that data to be recorded in the plurality of storage apparatuses is made redundant in the different storage apparatuses, wherein the controller performs a procedure comprising: detecting an error occurred upon access to an access destination being one of the plurality of storage apparatuses; determining, upon detection of the error, that the storage apparatus of the access destination is not an anomaly-occurring portion causing the error, when data to be accessed has no redundancy; and determining, upon detection of the error, that the common transmission path is an anomaly-occurring portion causing the error, when the data to be accessed has no redundancy and when there is a record of a past error in access to the storage apparatuses other than the storage apparatus of the access destination.