Have You Changed Your RAID Batteries?
You’ve done all the right things in your server configs; great RAID level for the server role, RAID Battery Backup (BBU), and installed a correct sized UPS to give the server plenty of time to run while everything shuts down. After a year or two, do you make a regularly scheduled maintenance visit to change the RAID BBU? Yes sadly it is true; the RAID BBU needs to be replaced periodically. Leaving an uncharged battery on the RAID card leaves the cache exposed in the rare case of a power outage.. In my 20 plus years in the business I can confidently say that this has happened exactly twice to two different customers. In both cases the customers attempted to re-build the array and both had the same outcome; the RAID array failed to recover, leaving both clients stuck without their systems for multiple days. What can be done to protect your clients and your reputation?