this post was submitted on 04 Jul 2023
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Hello fellow selfhoster, I was wondering how important it is to have ECC Memory. I want a server that is really reliable and ECC memory pops up as one of the must haves for reliability. But it seems to me in my research that it is quite expensive to get a setup with ECC memory. How important is ECC memory for a server (I rely on).

So far I have been rocking a Raspberry pi 4 which has ECC memory

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[–] fraenki@feddit.de 0 points 1 year ago

According to source the ecc has to 'kick-in' about 3700 times per year and dimm module. That's 10 times per day and dimm.

Depending on how important your server is to you you'll either need it (in case of important data you absolutely don't want to lose) or forget about it (just a hobby project, nothing serious).

[–] Hopfgeist@feddit.de 0 points 1 year ago

For large storage, ECC helps a lot for avoiding storage corruption. In combination with a redundant architecture in zfs it is almost bullet-proof. (Make no mistake, redundant storage is no substitute for backups! You still need those.)

One option is to use comparatively old server hardware. I have some pretty old stuff (around 10 years) that uses DDR3 RAM, which is dirt cheap, even with ECC (somewhere around 1 €/GB). And it will be fast enough by far for most applications. The downside is higher power consumption for the same performance. The Dell T320 I have with eight 3.5" SAS disks and 32 GB RAM uses some 140 W of power, to give you a ballpark figure.