On Sat, Jun 4, 2016 at 1:24 AM, Andrei Borzenkov <arvidjaar@xxxxxxxxx> wrote: > 04.06.2016 04:51, Christoph Anton Mitterer пишет: > ... >> >>> The only extant systems that support higher >>> levels of replication and call it RAID-1 are entirely based on MD >>> RAID >>> and it's poor choice of naming. >> >> Not true either, show me any single hardware RAID controller that does >> RAID1 in a dup2 fashion... I manage some >2PiB of storage at the >> faculty, all controller we have, handle RAID1 in the sense of "all >> disks mirrored". >> > > Out of curiosity - which model of hardware controllers? Those I am aware > of simply won't let you create RAID1 if more than 2 disks are selected. SNIA's DDF 2.0 spec Rev 19 page 18/19 shows 'RAID-1 Simple Mirroring" vs "RAID-1 Multi-Mirroring" -- Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
