On Fri, Oct 10, 2014 at 4:11 PM, Joseph L. Brunner <joe at affirmedsystems.com> wrote: > If this is a server - is it possible your raid card battery died? It is a server, but a home file server. The raid card has no battery backup, and in fact has been flashed to pure HBA mode. Actual RAID'ing is done at the software level. > The only other thing on the hardware side that comes to mind is actual bad sectors if this is not a raided virtual drive. The system has eight total drives: two SSDs in raid-1 for the OS, five 3.5 spinning drives in RAID-6, and a single 3.5 drive normally used for mythtv recordings (though mythtv has been stopped for a long time now to try to debug the issue). > From the OS side can you keep the box up long enough to do a yum update? Yes, I updated everything except packages beginning with "l" ("el" / lowercase 'L') due to that generating a number of conflicts that I haven't have time to resolve.