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Bad disks detected and blue LED lit
I have a quite old ReadyNAS Duo with two mirrored 1TB disks (Western Digital Caviar Green).
Yesterday after re-booting the NAS I got an error message saying "Bad Disks Detected" with the blue LED in RAIDar lit and I could not click the "Setup" or "Browse" buttons. However, both disk 1 & 2 indicated "green light". After having read this post:
https://community.netgear.com/t5/Using-your-ReadyNAS/RAIDar-reports-quot-bad-disks-detected-quot-during-Boot/td-p/894932
I tried the same thing. The difference between my problem and the above is that with both disks mounted I get the "Bad disks detected" error message, but with any of the disks mounted separately (Disk 1 in Port 1 or Disk 2 in Port 2), the NAS boots ok and I can access files and enter the admin UI. Then the yellow LED is lit however as there is only one disk mounted. So, right now I can use it but I do not have the extra security with the mirroring .
The firmware is the latest version: 4.1.16
So, my question is: Is there really a disk problem or is the problem with the NAS? How can one tell?
The factory reset seems to have solved my problem with the disks and I can now access the NAS etc. I have also recreated the files. Now what remains is to see if the device will continue to be unstable and in need of os reinstall every now and then.
Thanks for all the help!
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ManneD wrote:
So, my question is: Is there really a disk problem or is the problem with the NAS? How can one tell?
It might also be a failing power brick (not providing enough current to power both drives and the system itself), Replacement bricks are inexpensive, so one option is to do a risk-buy.
Connect the disks to a windows PC, and run Western Digital's Lifeguard software to test the drives. Look at the SMART stats too, since the vendors often will pass disks that I personally wouldn't use.
Ok, that may be something to look into. After reading about power bricks failing this just might explain why my PC also from time to time has lost the connection with the NAS and hence I have been forced to do a re-boot? If I understand correctly, with power brick you essentially refer to the power supply with it's adapter, right?
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