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Forum Discussion
Solved
Memory upgrade for Readynas RN 422
Output from "top" command: top - 20:04:50 up 6 days, 1:46, 1 user, load average: 0.04, 0.06, 0.00 Tasks: 173 total, 1 running, 172 sleeping, 0 stopped, 0 zombie %Cpu(s): 2.5 us, 0.5 sy, 0.0 ...
I'm informed by hardware engineering that on the RN422 and RN424 the RAM is soldered on and so it cannot be replaced.
Check the output from free -m too - top does not show how the memory is actually being used
e.g. on a ReadyNAS 516 with 4GB of RAM:
total used free shared buffers cached Mem: 3838 3634 203 17 1 2935 -/+ buffers/cache: 697 3140 Swap: 1023 0 1023
Only 203MB free - but the vast majority of the RAM is just being used for cache, the real available amount of RAM excluding cached items is 3.1GB, not 203MB...
If you want to be able to replace RAM (at your own risk, not supported) we do have the 520 series and 620 series:
RN524X: 2 memory slots (max: 32GB), support up to DDR4-1866
RN526X/RN528X: 4 memory slots (Max: 64GB), support up to DDR4-1866
RN626X/RN628X: 4 memory slots (Max: 64GB), support up to DDR4-2133
We use DDR4 UDIMM ECC memory module on shipping.
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