Emc IP Holding Company LLC

Dell Products Inc.

Gerry Fredette

Wayne E Garrett, Jr

Peter John McCann

Shuyu Lee

Brion Patrick Philbin

Mike Xizhan Song

Xu Jinqing

Ronald Proulx

Techniques described herein manage failed storage devices. A number of failed storage devices is determined to exceed a number of redundancies in a storage configuration of the storage system. The status of a failed storage device is changed to permit solely read operations. Valid data from the failed storage device is copied to a spare storage device. Invalid data on the failed storage device is reconstructed based on corresponding data from other storage devices, and the reconstructed data is stored on the spare storage device. The failed storage device is removed from the storage system.

Techniques for managing failed storage devices

A technique involves, in response to encountering a predefined number of consecutive I/O errors using a drive path to a storage drive, transitioning the drive path from online to quarantined to temporarily deny further I/O operations from being processed using the drive path. The technique further involves starting a quarantine timer that defines a quarantine time period. The technique further involves performing an update operation that updates the drive path. The update operation (i) changes the drive path from quarantined to removed to continue denying further I/O operations from being processed using the drive path when a removal notification is received before the quarantine time period expires, and (ii) changes the drive path from quarantined to back to online to allow further I/O operations to be processed using the drive path when a removal notification is not received before the quarantine time period expires.

Using path quarantining to identify and handle backend issues

A method, computer program product, and computing system for generating a sideband communication channel between a storage kernel driver and an error handling module of a storage system. One or more messages on the storage kernel driver may be detected. At least one message of the one or more messages may be communicated, via the sideband communication channel, from the storage kernel driver to the error handling module.

System and method for communicating messages with a sideband communication channel

Growing community of inventors

Bellingham, MA, United States of America

Gerry Fredette