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How bad of an idea is it to use computing HDDs in a DIY NAS? (sopuli.xyz)

submitted 4 months ago by theorangeninja@sopuli.xyz to c/selfhosted@lemmy.world

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The title says basically everything but let me elaborate.

Given the recent news about the sold out of harddrives for the current year and possibly also the next years (tomshardware article) I try to buy the HDDs I want to use for the next few years earlier than expected.

I am on a really tight budget so I really don't want to overspend. I have an old tower PC laying around which I would like to turn into a DIY NAS probably with TrueNAS Scale.

I don't expect high loads, it will only be 1-2 users with medium writing and reading.

In this article from howtogeek the author talks about the differences and I get it, but a lot of the people commenting seem to be in a similar position as I am. Not really a lot of read-write load, only a few users, and many argue computing HDDs are fine for this use case.

Possibilites I came up with until now:

Buy two pricey Seagate Ironwolf or WD Red HDDs and put them in RAID1
Buy three cheaper Seagate Barracuda or WD Blue and put two in RAID1 and keep one as a backup if (or should I say when?) one of the used drives fails.

I am thankful for every comment or experience you might have with this topic!

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[–] theorangeninja@sopuli.xyz 2 points 4 months ago (1 children)

Thanks a lot for this very in depth response! I had to take some time to sit down and properly understand everything so sorry for the late response.

I will take your advice seriously and buy at least three drives of the same size (to get this right, the model or brand doesn't necessarily need to be the same right?). Because I don't know if I can afford four of the size I would like to get. One question I still have is, how do you achieve the hot standby? Is this a software feature common NAS OS provide?

[–] corsicanguppy@lemmy.ca 1 points 4 months ago

how do you achieve the hot standby?

Raid6. Or, 3 in raid5 and a 4th inserted and marked exactly as "hot standby".

I hope that's enough to search on.