I want to upgrade my RAM in my RNDU4000. Comes with 1GB.What is the maximum for RNDU4000? Is it one or two modules?Ive read that the maximum is 4GB for this unit. Is that correct?1x4GB, 2x2GB? 600Mhz or 800Mhz? SO-DIMM DDR2 or SO-DIMM DDR3?Then i also want to replace the fan in this unit, it is annoying loud.What are the size and what can i replace it with? Any Noctua fan?Also looking for a small and non-expensive UPS only for this machine.It need to have one feature that it can shutdown the NAS automaticlly.So i guess the battery can have like 10min of power or something?I have looked some on APC and Powerwalker.

Anton_ wrote: Also looking for a small and non-expensive UPS only for this machine.It need to have one feature that it can shutdown the NAS automaticlly.So i guess the battery can have like 10min of power or something?I have looked some on APC and Powerwalker. I've gone with larger UPS myself - 1200 to 1500va. Hopefully someone who's used smaller models will be able to make a recommendatoin.

The RAM also needs to be 2Rx8 ("low density"), not 2Rx4 ("high density", sometimes labeled "AMD only"). Lower cost 4GB modules are going to be 2Rx4. The UPS I have on my remote NAS is an AMD 500VA one. It's an older model no longer available, but any current one with a USB port (which, I think, they all do) should work. Even a 350VA one would probably provide several minutes for a 4-bay NAS.

That is a very high price. I find compatible A-Tech SODIMMs on eBay for around $50US. The reason the 4GB sticks (both SODIMM and DIMM) are so much more expensive is that most users at the time PC2-5400/6200 was common were running 32-bit OSes that could only use 4BG total. And since most computers had at least two slots, only up to 2GB sticks were made in quantity. Anything you see for sale today was likely made years ago. Most 64-bit OSes were servers, where registered and/or ECC RAM (neither of which will work on the NAS in question) are generally used, so the vast majority of sticks above 2GB won't work. Unless you are running memory-hungry apps, you will not likely see any significant improvement of 4GB over 2GB.

I cannot quarantee that RAM that is not fully labeled will work, but I did state that I believe what you pointed to will work. Beyond that, I am not your shopping assistant.

Anton_ wrote: I want to upgrade my RAM in my RNDU4000. Comes with 1GB.What is the maximum for RNDU4000? Is it one or two modules?Ive read that the maximum is 4GB for this unit. Is that correct?1x4GB, 2x2GB? 600Mhz or 800Mhz? SO-DIMM DDR2 or SO-DIMM DDR3? The Ultra 4 will take up to 4 GB, but I believe it only has one slot. 200-Pin DDR2 SODIMM DDR2 667 (PC2 5300) should work.

RAM Upgrade, Fan replacement, UPS, RNDU4000

19 Replies

StephenB
Guru
Aug 31, 2020
Anton_ wrote:

I want to upgrade my RAM in my RNDU4000. Comes with 1GB.
What is the maximum for RNDU4000? Is it one or two modules?
Ive read that the maximum is 4GB for this unit. Is that correct?
1x4GB, 2x2GB? 600Mhz or 800Mhz? SO-DIMM DDR2 or SO-DIMM DDR3?

The Ultra 4 will take up to 4 GB, but I believe it only has one slot.

200-Pin DDR2 SODIMM DDR2 667 (PC2 5300) should work.
- Anton_
  Tutor
  Aug 31, 2020
  Thank you, i will look into it!
  G.Skill have compatible RAM.
StephenB
Guru
Aug 31, 2020
Anton_ wrote:

Also looking for a small and non-expensive UPS only for this machine.
It need to have one feature that it can shutdown the NAS automaticlly.
So i guess the battery can have like 10min of power or something?
I have looked some on APC and Powerwalker.

I've gone with larger UPS myself - 1200 to 1500va. Hopefully someone who's used smaller models will be able to make a recommendatoin.
- Anton_
  Tutor
  Sep 01, 2020
  Ok, what model are you using? How have you it setup for the NAS?
  - StephenB
    Guru
    Sep 01, 2020
    I've gone with CyberPower - not necessarily saying they are the best choice, but they have worked for me. The most recent purchase was the CP1500AVRLCD. Options here do depend somewhat on your power (I'm in the US). APC is certainly a popular choice, and there are certainly others (Eaton being one I recall off-hand).
    
    On the setup, all you need to do with a single NAS is connect the USB cable on the UPS to the NAS (and of course also connect the NAS to the UPS power). With multiple NAS, you can monitor the primary NAS (directly connected to the USB) over the network - making sure that the switch (or router) is also protected by the UPS.