On 25/04/17 12:37, Patrik Dahlström wrote: > I'm not sure how I would backup 20 TB of data. I'll backup what I can, > of course. The most essential. Buy some cheap disks :-) A quick skim gives me £111 for a 4TB drive, but that'll be tricky to find. It is a Barracuda, however ... https://www.eclipsecomputers.com/Product/4TB-Seagate-Barracuda-5900rpm-SATA3-64Mb-HardDrive/ Better are 8TB (£260) or 10TB (£365, £420) drives, but they're pricy. https://www.eclipsecomputers.com/Product/8Tb-Seagate-SkyHawk-7200rpm-SATA3-256Mb-Hard-Drive/ https://www.eclipsecomputers.com/Product/10Tb-Seagate-IronWolf-7200rpm-SATA3-256Mb-Hard-Drive/ https://www.eclipsecomputers.com/Product/10Tb-Seagate-IronWolf-Pro-7200rpm-SATA3-256Mb-Hard-Drive/ If it's just a temporary backup, I'd try and get another couple of drives same as your raid, and beg borrow or steal as many drives from your friends as you need. Your local little computer shop might have a load of drives salvaged from dead pc's that you can borrow (or maybe not :-( Cheers, Wol -- 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