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ReadyNAS Pro Business NAS power supply
I have ReadyNAS Pro Business (six drives) and it will not turn on, no power. I believe it's the power supply, it's been running for what 13+ years, I believe. So, I'm looking for a solution. Can...
The power supply is usually the first thing to go, and you got a long life from yours. So, your diagnosis is likely correct.
That's a hugely overpriced supply, though it should work. The stock supply is auto-switching from 120V to 230V. But few need to move from one to another, so a switch (which you won't be able to access external to the NAS) for that is usually acceptable.
The ReadyNAS Pro6/Ultra6 power supply is a standard SFX form factor supply except that the cable is longer and it has 3 Molex 4-pin connectors where many no longer do. But those are easily fixed with a 6" ATX 24-pin extender and either SATA to Molex adapters or Molex splitters. While the original supply is rated at 300W, it has more 12V available (for the drives) than most of that rating. So, I recommend at least a 350W replacement, and typically use 400W or 450W myself. I've used this one with success (though from another supplier): https://www.neweggbusiness.com/product/product.aspx?item=9siv2d7hsm1674&tpk=9siv2d7hsm1674 . With the necessary adapter and extender, of course. It has only 2 4-pin Molex connectors.
Or if you don't want to mess with adapters, you can get a modified supply on eBay for about half what they are asking in the listing you linked.
The power supply is usually the first thing to go, and you got a long life from yours. So, your diagnosis is likely correct.
That's a hugely overpriced supply, though it should work. The stock supply is auto-switching from 120V to 230V. But few need to move from one to another, so a switch (which you won't be able to access external to the NAS) for that is usually acceptable.
The ReadyNAS Pro6/Ultra6 power supply is a standard SFX form factor supply except that the cable is longer and it has 3 Molex 4-pin connectors where many no longer do. But those are easily fixed with a 6" ATX 24-pin extender and either SATA to Molex adapters or Molex splitters. While the original supply is rated at 300W, it has more 12V available (for the drives) than most of that rating. So, I recommend at least a 350W replacement, and typically use 400W or 450W myself. I've used this one with success (though from another supplier): https://www.neweggbusiness.com/product/product.aspx?item=9siv2d7hsm1674&tpk=9siv2d7hsm1674 . With the necessary adapter and extender, of course. It has only 2 4-pin Molex connectors.
Or if you don't want to mess with adapters, you can get a modified supply on eBay for about half what they are asking in the listing you linked.
Thank you very much for your reply Sandshark. I looked at your suggestion and yes, I'll do the APEVIA SFX-AP400W thing. But I was thinking isn't there small modular form PSU out there with better energy utilization, I could be using that power supply another 10years.
started looking for a 6" ATX 24-pin extender, 8" is the shortest I have found so far. How many SATA to 4 pin Molex adapters do I need?
again thanks for the help.
A power supply will only deliver the current needed by the NAS, so a 400W will draw no more than a 300W. Power supplies also tend to have the highest efficiency at somewhere between half and 90% load. So you really aren't going to find anything that's significantly more efficient. You can find "Gold Plus" SFX supplies if you really want something more efficient, but they are quite a bit more expensive and usually rated at a much higher wattage. I do see that the Chinese suppliers that used to have a bunch of lengths of extenders don't seem to be as prolific on eBay these days. An 8" will do fine, you'll just have to "tuck in" a bit of it -- but there is room to do so. You should only need one SATA to Molex adapter, as that supply already has two of the needed three. Another option is to move the (push-on) 90° connectors from the old one to the new, which also allows you to shorten the cables and not have any adapters. That's what I do, but many are not comfortable doing it.
BTW, if you have a standard ATX12V supply of 300W or better, you can connect that externally just to know you've made the proper diagnosis or for long enough to get the data off if you're retiring the NAS.
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