Speeding Up MDADM RAID Rebuilds

I’m slowly migrating a bunch of awesome things from a really old server, it’s still running Ubuntu 10.04.. to a really nice and shiny one. Which has 2 new 3TB HDDs in RAID 1, which are syncing.. cat /proc/mdstat md3 : active raid1 sda4[0] sdb4[1] 1847478528 blocks super 1.2 [2/2] [UU] [>………………..] resync = 0.1% […]