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Forum Discussion
ReadyNAS RNDU6000 memory upgrade - won't boot
I bought the ReadNAS Ultra 6 with 3x3TB disk in 2011. Upgraded to OS6 long time ago even though it was not supported. Been running fine since! Few years ago I dropped using "apps" in favor of docker ...
I've never tried taking an Ultra6 beyond 2GB, but it has been my belief that 2x2GB should work; and your memory does have the proper rating. I don't believe 8GB will, though that doesn't affect you. Does it work if you mix the old 1GB stick with one of the 2GB's? None of the legacy desktop NAS use dual-channel memory, so mixing different size sticks will not have any negative effects.
According to what I've read on the forum in theory 8GB could be possible but is unconfirmed. 4GB has been done and confirmed. That's why I went with 2x2GB.
Anyway I would have tried mixing DIMM's if it wasn't for your sugestion (note the dual channel...). I just booted the nas with the original 1GB and the new 2GB and that works to!
It doesnt make sense to me yet but this is 3 times more memory than this morning already :)
Appreciate your feedback!
mrmilo wrote:
According to what I've read on the forum in theory 8GB could be possible
No. The Ultra-6 has a D510 processor, and that has a max memory size of 4 GB. Some Ultras only have one memory slot - for them the max memory is 2 GB.
Confusion here is because the Ultra-6 Plus (like the Pro-6) uses a different processor.
The 4GB limit is expected, but working with 3 and not 4 isn't. Maybe it is a BIOS issue. The BIOS update package contains RN_Ultra6_061010.ROM. bios_ver.log from the downloaded logs zip from my Ultra6 has the same 6/10/10 date, so you can check that and see if yours is different.
FYI, the fact that the NAS will boot with a single stick in either slot is usually a sign that it's not dual-channel RAM.
Bios date: 05/26/2010
I have never done a bios upgrade on my machine. Did some searching the forum and found a download link for BIOS_Update_Package_0.5-x86.bin but am uncertain it is ok to try.
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