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Do you think Raspberries without ECC RAM are fine to use for a Ceph storage cluster? I did some research yesterday on the same topic, many say ECC Ram is essent
by naranha 4y ago
Do you think Raspberries without ECC RAM are fine to use for a Ceph storage cluster? I did some research yesterday on the same topic, many say ECC Ram is essential for Ceph (and ZFS too). But I'm not sure what to believe, sure data could get corrupted in RAM before being written to the cluster, but how likely is that?
- dpedu 4y agoECC is not necessary for ZFS - this is a commonly repeated myth. https://news.ycombinator.com/item?id=14447297 https://news.ycombinator.com/item?id=14447297
- dijit 4y agoraspberry pi's have ECC memory; it's just on-die ECC. (this was a surprise to me too)
- EvanAnderson 4y agoIt sounds like the ECC counters are completely hidden from the SoC, though: https://forums.raspberrypi.com/viewtopic.php?t=315415 https://forums.raspberrypi.com/viewtopic.php?t=315415
- naranha 4y agoSounds like what DDR5 is doing too, errors are corrected automatically, but not necessarily communicated (?)/
- amarshall 4y agoDDR5 on-die ECC is not the same as traditional ECC. To that point, there are DDR5 modules with full ECC. On-die DDR5 ECC is there because it needs to be for the modules to really work at all.