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Forum Discussion
RND4000 volume scan/RAID sync every day
Hi,
I have the ReadyNAS NV+ RND4000, up to date with the latest firmware. It's been running flawlessly for about ten years albeit with only light use. It powers down overnight and there are man...
Disassembly revealed lots more dust and also that the RAM appeared properly seated. I cleaned but didn't reassemble to test at that point and went on to remove the PSU. Having reconfirmed with the multi-meter that the power cable (and the meter itself!) was working, I probed around in the power connector following the schematic found here:
http://www.readynas.com/download/archive/pdf/ReadyNAS_PSU_pinout.pdf
Nothing doing on various pins, various voltages, various grounds. Still seems odd to me that it should give up at the exact single time I physically disconnect it rather than one of its scheduled power downs every night, but there we have it.
PSU options would seem to be:
1. Hack a PC PSU, for the purpose of data recovery - I would probably be able to do this if it is just a case of the layout of the power connector;
2. Buy a new replacement PSU and reinstate the NV+ - easy option but probably worst value;
3. Buy a used NV+ and use it and/or its PSU to reinstate - risk of aged components, but then I'd have almost a full spare set if anything else went wrong. Any version issues to be aware of in this case?
Many thanks again for your assistance in these matters and helping to distill some of the information that is scattered across various threads!
Those are the right options, though with (1) I suggest hacking an extension cable - leaving the main supply untouched. The supply needs to be external anyway, so you will need an extension.
On (3), the main thing to avoid is getting an NV+ v2 accidentally. The labels on the back of the original NV+ identify minor hardware revisions using v2 and v3. But the "NV+ v2" is a completely different beast - an ARM based platform, which uses differently formatted disks. So you don't want a model that says "NV+ v2" on the front panel.
A couple of links that might be useful:
https://community.netgear.com/t5/Using-your-ReadyNAS/RND4000-NV-Power-Supply-Options/td-p/1134764
One supply that is still available for a reasonable price is the KT-FATX250 - you will find that one mentioned in one of the threads I linked in. Sandshark often helps folks who have questions on PSU replacement.
I'm picking this up again after three weeks away on a family health matter. In the meantime I've acquired an empty but ostensibly working NV+. I've powered it up and run the memory test, which shows OK.
My principal question is whether I should just plug my disks into this 'new' enclosure or instead move the PSU to my old one? If it's the former, is there any more testing I should do, or any kind of reset or whatever - before or after? I'm not sure how much of the OS etc. is on the disks and how much in the hardware (although I'm told it's up to date).
Thanks again.
tupholme wrote:
I'm not sure how much of the OS etc. is on the disks and how much in the hardware (although I'm told it's up to date).
The system boots from the disks, so the entire OS (and configuration) is on the disks.
The boot loader will check to see if the firmware in it's flash matches what's on the disk, and it will automatically upgrade/downgrade the disk(s) if there is a mismatch. If you aren't certain what was on your original disks, then just install the current 4.1.16 firmware with your scratch disk installed. That will update both the OS on the scratch disk and the flash. Then if you migrate, the system will update your disks to 4.1.16 if that's not already installed on them.
tupholme wrote:
My principal question is whether I should just plug my disks into this 'new' enclosure or instead move the PSU to my old one? If it's the former, is there any more testing I should do, or any kind of reset or whatever - before or after?
Both will work, of course migrating your disks is a bit simpler.
One risk of course is that the firmware is mismatched. The procedure above should deal with that. Though if your firmware is very old, you might want to move the PSU.
Another risk of migrating is just that there might be something subtle that is broken in the replacement. One easy test you could do - test that all the bays are functional. Do this by powering down the NAS, putting your scratch disk into an empty bay, and power up/confirm normal boot. Repeat this until all the slots are tested.
If you use the USB ports, test them too.
OK I'm up and running with access to my data! Had a 'Volume scan found and corrected errors' followed by a RAID sync initially but it booted cleanly this morning.
The logs are also telling me that the fan has failed, even though it's spinning fast and the operating temperature is normal - sensor problem? I was thinking about fitting a newer, quieter fan anyway.
Interestingly this unit has Infrant branding on the motherboard and is therefore even older than my original NETGEAR-braded one.
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