Systems and methods for detecting bit rot in distributed storage devices having failure domains

Abstract

The disclosed computer-implemented method for detecting bit rot in distributed storage devices having failure domains may include (1) receiving, at a computing device, a combination of data chunks created by adding, for each failure domain storing data chunks, data chunks from different stripes, (2) receiving a combination of parity chunks created by adding, for each failure domain storing paritychunks, parity chunks from the different stripes, (3) creating at least one new parity chunk from the combination of data chunks, and (4) identifying a presence of bit rot in the failure domains whenthe at least one new parity chunk does not match the combination of parity chunks. Various other methods, systems, and computer-readable media are also disclosed.

Description

Background technique [0001] Bit decay is the slow deterioration of the data integrity of a storage medium. Bit decay may also be referred to as bit decay, data decay, data decay, and silence corruption. Bit rot can occur when bits on a hard drive change state randomly. With the recent increase in data storage capacity and the increased duration of time that data resides on storage media (eg, for archival use), the chance that specific data will be affected by bit rot increases. Accordingly, there is an increasing need for systems and methods for detecting and correcting bit rot. Conventional methods for detecting bit decay send all data blocks and all parity blocks over a network for remote analysis. This results in taking a long time period and requiring a large amount of network bandwidth to perform the detection. Accordingly, the present disclosure identifies and addresses a need for a system and method for detecting bit decay in a distributed storage device with fault ...

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Problems solved by technology

This results in taking a long time period and requiring a lot of network bandwidth to detect

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