this post was submitted on 14 Jan 2024
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Hey guys ive been self hosting things for a while now mostly just off a bunch if old computers in a k8s cluster.

The majour issue i have currently is all my data is on a single hdd in an old dektop. Its painfully slow and very risky as i have no backup or anything (i dont feel to great about that).

I really dont have much $ to spend hence my setup is built from a stack of practically ewaste hobbled together. I finally have the $ to buy some drives how should i go about building myself a nas on the cheap?

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[–] [email protected] 5 points 11 months ago

Your biggest bang for buck is with cheap second hand drives, keep a spare on hand to rebuild the array / volume when one dies. You should be aware that the number of drives in the array directly affects the amount of usable space, 2 drives 50% of total available (a direct mirror, to compensate for the loss of one drive), 3 drives you get 66%, 5 gets you 80%. Say you get 6 4Tb drives, keep one as a spare and the remaining 5 will give you 16Tb usable (with one lost to parity so you can survive one disk failure). You then immediately want to save for a 16 Tb external drive for offline, preferably offsite backup (RAID is not Backup!). As others have wisely said, anything can be used to host, but aim at the most power efficient. If necessary get a PCI card for more SATA or SAS ports. Identify high value, small files, documents, current work, personal photos, source code and so forth and arrange for cloud backup, preferably with local encryption so you needn't trust the cloud provider, preferably in at least two places (so one can go tits up or enshittify without bothering you). You'd be surprised what fits into a free 10Gb account if you triage well.

Good luck.