anyone? Sent from my iPhone > On 17 Dec 2014, at 12:11, George Duffield <forumscollective@xxxxxxxxx> wrote: > > Hi > > I have a RAID5 array comprising four 3TB drives and I've basically got > 100GB remaining free so it's time to expand the array. With this in > mind, and considering my requirement is predominantly to increase > capacity, I'm wondering whether it'd be best to add another 3TB drive > and expand the array whilst retaining RAID5 or to switch out to a > RAID10 array. My thinking is 1) adding a 5th 3TB drive to the > existing array may result in drive failure during the rebuild; and 2) > RAID10 is very expensive to implement. Hence, I'm tempted to consider > other options (recognising that whilst it'd be convenient I don't > actually need everything stored on a single array). One such option > would be running two raid5 arrays comprised of 3x 3TB each yielding > 12TB of storage across the two arrays. > > > Questions: > + Is my assumption re RAID5 drive failure correct/ likely? > + Is there a non-destructive way to migrate from RAID5 to RAID10? > + 2 x RAID5 arrays seems pretty appealing - from a reliability and > cost effectiveness standpoint - yes/no? -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
