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A comment on Synology reverses policy banning third-party HDDs after sales allegedly plummet. Parent comment

Re:Synology reverses policy banning third-party HDDs after s... by mrob on Wednesday October 08, 2025 @08:08AM (#45515255)
The specs claim "ECC" [0], but give no further details. ejolson on the Raspberry Pi forums [1] thinks it is on-die ECC, not traditional ECC, which would mean transfers between the RAM and the memory controller are not protected and there is no means of monitoring errors. Some discussion on Reddit [2] also suggests it's on-die ECC. If this is true, it's better than nothing but still not a replacement for a NAS with traditional ECC RAM.

[0] https://www.raspberrypi.com/products/compute-module-5/?varia...

[1] https://forums.raspberrypi.com/viewtopic.php?p=2296449#p2296...

[2] https://old.reddit.com/r/raspberry_pi/comments/1irryax/raspb...

[ Parent | on HN ]
Re:Synology reverses policy banning third-party HDDs after s... by reactordev on Wednesday October 08, 2025 @09:29AM (#45515957)
The chip is the memory controller…

Yes it’s on-die. Yes it has error reporting. Don’t spread fud. There isn’t a dedicated chip because there doesn’t need to be.

Broadcom BCM2712

[ Parent | on HN ]
Re:Synology reverses policy banning third-party HDDs after s... by mrob on Wednesday October 08, 2025 @09:38AM (#45516059)
In that case I incorrectly thought (like the other forum posters) it was like DDR5 on-die ECC. What you describe is better than DD5 on-die ECC. Is this error reporting supported by Linux? Is there some way I can do fault injection (e.g. undervolting the RAM) to check it's working?
[ Parent | on HN ]