On Fri, 2024-02-23 at 02:21 -0500, Ron Johnson wrote: > On Fri, Feb 23, 2024 at 2:02 AM Laurenz Albe <laurenz.albe@xxxxxxxxxxx> wrote: > [snip] > > > > Anyway, my personal experience with a shared disk setup is a bad one. > > > > Imagine two nodes, redundantly attached to disks mirrored across data > > centers with fibrechannel. No single point of failure, right? > > Well, one day one of the fibrechannel cables had intermittent failures, > > which led to a corrupted file system. > > So we ended up with a currupted file system, nicely mirrored across > > data centers. We had to restore the 3TB database from backup. > > 1. Sounds like both nodes were turned on. Possible, but I think that's not relevant. > 2. Couldn't this happen in /any/ SAN with redundant cabling? I'd say yes, and the redundant cabling is irrelevant too - I just wanted to emphasize that hardware redundancy is not enough. The single point of failure was the file system. Yours, Laurenz Albe
