Safe data recovery : Dos and Dont’s of rebuilding RAID arrays in data centers after a hard disk drive failure
It is unwelcome, it is tedious, but it is inevitable.
Every service provider dreads a hard disk crash, and the downtime it can lead to, but it is one eventuality that will happen sooner or later.
Today was one such day. A high priority alert notified our Dedicated Linux Server Administrators about a degraded RAID array in a data center we managed. Hard disk crashes are a P0 (highest priority) alert in our infrastructure management procedures, and initiates an emergency response.