RAID0 is not mirror, its is stripe, which is fast but *increases* your failure chances. If you want mirroring, RAID1 is what you need. I wanted to point this out since in the controller config is just says "RAID0" or "RAID1", so make sure you pick the right one!
You're right in that the main difference is the speed of the disks, so it's really dependent upon what you'll be using the server for. I suggest you purchase an additional disk and run it as a hot spare with auto rebuild, or keep it as a cold spare. You don't want to be caught if the remaining disk goes bad while you're waiting for the replacement. On Mon, Aug 3, 2009 at 4:14 PM, Yedidia Klein<[email protected]> wrote: > Hello list, > > I plan to buy a r200 as a linux server, from what I read centos is my > best choice for OS. > I'm thinking about buying sata disks that are much cheaper than SAS > and seems to be supported for raid 0 (mirror) on the built in raid > controller - SAS 6iR (am I right ? does this controller support sata > disks ?) > > I assume that w/ NBD service I can get a replacement on hd failure in > case of troubles before the second disk will die. > > Does OSMA report information about sata raid ? > > any other arguments against sata ? I know that the disks are slower - > but probably my bottle neck will be the net and not disks. > > tnx, > > --Yedidia > _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
