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Unraid is the only one that allows you to freely add/remove drives. And only if you're OK with taking cluster down for a minute as you add it. If you true free
by tinco 6y ago
Unraid is the only one that allows you to freely add/remove drives. And only if you're OK with taking cluster down for a minute as you add it.
If you true freedom you'd need to go Ceph(FS) based, but there's no GUI to manage a Ceph cluster that I'm aware of, and they're so focused on cloud usage that you'll find little guidance on single-node clusters.
edit: Forgot to read Louwrentius' comment, of course MDADM with raid 6 allows you to add disks in pairs of two, so that's definitely also an option. Don't forget to use LVM, it can get real awkward without it.
- nix23 6y agoDon't forget GlusterFS, example: Every single disk is a ZFS-pool on top of that you run your GlusterFS-Cluster, GlusterFS then looks for the redundancy and underneath you can export/import your pools aka Disks and or vdevs (if you need more performance). >but there's no GUI to manage a Ceph cluster that I'm aware of There are two, Open Attic and Calamari ,but Open Attic is in maintenance mode, so all the work goes now into Ceph Dashboard: https://docs.ceph.com/en/latest/mgr/dashboard/ https://docs.ceph.com/en/latest/mgr/dashboard/
- magicalhippo 6y ago> Unraid is the only one that allows you to freely add/remove drives. I think technically you can do something similar to Synology's Hybrid RAID[1] with ZFS, using partitions and creating mirror VDEVs from the partitions. But I haven't gone through all the details so could be there are some risks I overlooked and in any case you'd have to manage it from the command line so would be a bit tedious. But I did set up a proof of concept in a VM. [1]: https://nascompares.com/guide/shr-synology-hybrid-raid/ https://nascompares.com/guide/shr-synology-hybrid-raid/