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Hardware raccomandation for new selfhoster (feddit.it)

submitted 15 hours ago* (last edited 14 hours ago) by bordam@feddit.it to c/selfhosted@lemmy.world

35 comments fedilink hide all child comments

Hi, I wanted to start selfhosting and I'd like to have your opinion on something that I'm struggling to decide.

I don't plan to tinker too much with my system, I've been a Linux tinkerer myself some time ago but now I'd like to setup something that's really bulletproof and then leave it running (ofc I know I'll have to do a bit of bugfixing now and then), not replacing hardware ideally for >= 10 years.

This is why I'm planning to use TrueNAS, and that's why I'm planning to buy a UGREEN DXP2800: has two 3,5" HDD bays (4TB should be enough for me for the next 8-10 years, so I'll have two 4TB disks in RAID1 or mirror or whatever is recommended). Only problem I have with this machine is that it only has 1 RAM slot, and I guess 8 GB isn't enough if I use zfs. So I'll have to upgrade to either 16 or 32 GB. Now I did my research and from my understanding 16GB seems to be enough, but it would be such a waste having to replace the whole RAM if it turns out it isn't enough.

For reference, I don't plan on having more than 7-8 services running: Immich, Nextcloud+office, firefly, audiobookshelf, paperless and a maybe few more if they're useful. I value responsiveness but it's ok if some things take longer to process (thinking immich ML, or stuff like transcoding)

I'm very interested to know your opinion:

is the dxp2800 a good choice?
should I go with 16 or 32 GB RAM?

And a little extra

how much ssd space do you recommend for high speed data? is 500gb enough?

Thank you so much!

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[–] bluGill@fedia.io 0 points 13 hours ago (1 children)

ZFS snapshots are easy to settup. If you don't notice that you deleted all the snapshots for a month you never will.

you still should have offsite backups for a fire, but the notion that raid isn't backup is not really correct since for most people the situations that raid with snapshots isn't enough protection will never occure and to the risk is acceptable. Plus raid is a lot easier to get right. For that matter if you have a backup but don't have the password after the fire you don't have a backup.

though if you rely on raid alone I'd want 3 disk redundancy.

[–] Onomatopoeia@lemmy.cafe 1 points 5 hours ago* (last edited 5 hours ago)

One drive failure means an array is degraded until resilvering finishes (unless you have hot spare, at least then the array isn't degraded and silvering a new drive isn't as risky).

Resilvering is an intensive process that can push other drives to fail.

I have a ZFS system that takes the better part if a day (24 hours) to resilver a 4TB drive in an 8TB five-drive array (single parity) that's about 70% full. When uts resilvering I have to be confident my other data stores don't fail (I have the data locally on 2 other drives and a cloud backup).