All hardware eventually fails. This is one of the painful side effects of entropy in our universe. For most of the types of hardware used in modern infrastructure, the loss of a single component usually incurs some amount of downtime. Other than the time taken to swap out something like a bad CPU or stick of RAM, sysadmins or users rarely see many long term ill-effects. But unless an admin takes particular care with storage, data loss from disk failures can have immediate and lasting consequences.Continue reading “RAID Types – Explained”
This tutorial will walk through the troubleshooting and recovery of a failed disk on a Software RAID setup. Especially mirroring the boot partition which is important when replacing disk and making sure the OS boots up properly after replacement. This tutorial was done on Ubuntu 14.04 but should still work on other distributions such as RHEL and CentOS.