On Mon, May 24, 2010 at 11:43 AM, Weiner, Michael <weinerm at ccf.org> wrote: > Brian Mathis, On Monday, May 24, 2010 11:17 AM ... >> PPS. You might have a reason, but it would be irresponsible not to >> point out that by using RAID0 you now have an exponential risk of >> losing all of that data. > > The Raid0 is simply a large disk pool for temporary data storage. Not > the way I would build this, but I am simply managing the hardware for > this individual, and he has been warned about the loss of data due to > the single point of failure, especially without backing this data up to > somewhere I can get to it with tape > > Thanks again > Michael ... OK, I won't beat this to death, as I know there are always exceptions to the rules, BUT a 4-way RAID0 is far more likely to fail than just a single disk, so I wouldn't consider it a single point of failure. I'm not sure about the math right now, but it's something like 2^4 (16) or even 4! (24) time more likely to fail than a single disk.