I have two U3 Odroids scheduled for delivery tomorrow - currently in Khazakstan! - isn't parcel tracking cool
Anyway, its time for me to look at my hardware again, B3 and Odroid and I'm wondering about disks.
Some questions for MaidSafe engineers maybe - if there are quick answers @ross / @dirvine
I'm considering the following setups co-located and sharing broadband and wondering how to provide storage and operate them. Any input would no doubt help others considering farming h/w setups:
- excito B3 plus either single 2TB HDD, dual 2TB+2TB HDD, or single SSD (e.g 512GB)
- odroid U3 with 64GB eMMC RAM plus SSD (e.g. 256GB)
- odroid U3 with 64GB eMMC RAM
Actually the second U3 will probably end up on my boat for me to play with and not farming.
First question is about the B3. Obviously drives fail, which means significant downtime for me (as I'll be 200 miles away) and I'm wondering about the best configuration to handle this. b3 supports RAID, so I could use RAID to put off the evil day, but when a drive fails I will lose the vault and its ranking will plummet - b3 is not very good at handling a RAID drive failure (not easy to rebuild the system drive from the auxilliary).
So my question is about whether to avoid RAID, and use the two drives to mirror the vault "manually" onto the second HDD? So if a drive fails, I replace it, and restore the vault from the mirrored copy. Would that even work? Using rsnapshot? Would it help recover ranking after a drive failure? If a vault goes offline, how quickly is ranking lost, and would it recover more quickly by restoring a vault than simply starting from a clean vault? I realise there are no definitive answers to these questions (if any at all at this point), but some discussion of the issues would be helpful.
TL;DR version: does it makes sense to make a local backup of a vault to recover from a drive failure and hard earned farm rate, and if so under what kind of cirumstances (such as maximum downtime to restore a broken vault).
Also @ross / @benjaminbollen any news on b3 setup, and any secret knowledge needed for U3 setup (Ubuntu)?