On Tue, 2006-03-21 at 15:52 +1100, jakosalem@xxxxxxxxxxxxxxxxx wrote: > Hello All, > > I've been googling the past couple of weeks to find a solution to my > problem. Obviously I have not been successful. I really need a solution > fast. > > I'm currently setting up a new server with 8X73 SCSI disks. I want to > implement RAID 0+1 (create a RAID 1 array from a pair of RAID 0s with 3 > disks each). I'm currenly running Fedora Core 4 with the latest updates. I > have been trying to do this but to no avail. > Why not raid 5? The available space is n-1 for the number of drives used. A single drive failure does not impact function at all because of the redundancy and parity stripe that keeps all data intact. Raid 0+1 gives at best n/2 space and means you only have 3*73 or a total of 219gb available. A single disk problem takes out the entire mirror copy (3 disks) because of striping. A data error on one copy and any other error (even in a different location) on the second copy will take everything out (again because of the striping effect of raid 0). The same 6 drives in raid 5 would give you 5*73 or 365gb of space and a single drive failure would not in any way harm your data. The redundant drive feature would keep everything working while the one drive is replaced. If I have the option I would personally never recommend a raid 10 configuration. > I think I read somewhere that Fedora Core 4 still has no support for this. > Is this correct? Will Fedora Core 5 solve my problem? Can anyone help me > out on the steps needed to create a RAID 10 setup? > > Really need help. > > TIA, > > Edward > > >
