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Forum Discussion
Bad disks detected and blinking blue LED
Hi,
I have the ReadyNas Duo with 2 off 2TB WD Green Caviar drives. This is setup as a mirror. The problem started when the fusebox tripped in the house and the NAS lost power. When I switched the NAS back on again the blue LED was flashing and even after leaving it for a couple of hours I could not pickup the NAS on RAIDar, access any shares from the PC or the web interface. The data stored on the NAS is very important to me and contains 10s of 000's of family photos that are only stored here.
1) Since then I powered off the NAS by unplugging the unit as it would not switch off by holding in the power button for 5 seconds. I switched the unit back on and left it overnight but still had no access to the drive.
2) Again I powered off the unit and when I switched it back on held in the reset button for 5 seconds in an attempt to reset the firmware, but still did not give me access to the unit.
3) I powered down the unit again and removed the second hard drive from the NAS and switched it back on again. After leaving it overnight again I could then pickup the NAS in RAIDar, but it said "Bad disks detected". I think the firmware reset was successful as it is now using a different IP address.
4) I have taken the second drive which I had removed and tried to boot it as a slave drive to see if I could see the files in windows with no success. In disk management I could see the disk but it said it was unallocated.
5) I then booted the computer into Linux, a Ubuntu ditribution, but when clicking on computer I got the message "cannot mount this file".
6) I am now using the WD Data Lifeguard Diagnostic for Windows to test the second drive. The drive received a SMART status PASS. Next I did a quick test, and this did not pickup any problems. Now I am trying an extended test.
What should I do next? I can't afford to lose the data stored on these drives, but don't know what to try next!
Any help is much appreciated.
Daz
I have the ReadyNas Duo with 2 off 2TB WD Green Caviar drives. This is setup as a mirror. The problem started when the fusebox tripped in the house and the NAS lost power. When I switched the NAS back on again the blue LED was flashing and even after leaving it for a couple of hours I could not pickup the NAS on RAIDar, access any shares from the PC or the web interface. The data stored on the NAS is very important to me and contains 10s of 000's of family photos that are only stored here.
1) Since then I powered off the NAS by unplugging the unit as it would not switch off by holding in the power button for 5 seconds. I switched the unit back on and left it overnight but still had no access to the drive.
2) Again I powered off the unit and when I switched it back on held in the reset button for 5 seconds in an attempt to reset the firmware, but still did not give me access to the unit.
3) I powered down the unit again and removed the second hard drive from the NAS and switched it back on again. After leaving it overnight again I could then pickup the NAS in RAIDar, but it said "Bad disks detected". I think the firmware reset was successful as it is now using a different IP address.
4) I have taken the second drive which I had removed and tried to boot it as a slave drive to see if I could see the files in windows with no success. In disk management I could see the disk but it said it was unallocated.
5) I then booted the computer into Linux, a Ubuntu ditribution, but when clicking on computer I got the message "cannot mount this file".
6) I am now using the WD Data Lifeguard Diagnostic for Windows to test the second drive. The drive received a SMART status PASS. Next I did a quick test, and this did not pickup any problems. Now I am trying an extended test.
What should I do next? I can't afford to lose the data stored on these drives, but don't know what to try next!
Any help is much appreciated.
Daz
6 Replies
Replies have been turned off for this discussion
- Hello Daz:
Your case seems alike mine: I have a rack unit NAS with 3 disks bad and 1 disk O.K.
The behavior on the leds and the FrontView access is similar, and I can share with you that through another LINUX distribution I managed to recover 2 of the 3 dead disks; the distribution is the Knoppix Linux that also offers a Live CD pretty alike Ubuntu; the main difference is the program "dd_rescue" that is powerful and dangerous but seems to me that you can work it out to give a try to your HDD.
Better than redirect your attention to my post nor my comments (we do have different NAS boxes) I better invite you to search the forum for "dd_rescue" because there are good posts about, and I just not wish to mislead you as I'm just a final user, not an expert, but indeed after more than 40 hours a piece that dd_rescue program recover a couple of 1TB Barracudas 97% full for me, and shown only data damaged by 2%, for that reason I think it might giving a try as I did.
I wish you success in this "Jedi affairs" like this participative forum stands for :-) - Very strange.
48 hours ago I got a 'bad disk detected' warning in my Duo. I removed the disk and tried connecting it using a hard drive kit. Windows can see the drive though I can't figure out how to allocate a drive letter to view the files.
The other disk was working ok. I had the duo set up as two separate drives - no RAID.
Now today, the second drive has gone the same. Now this is strange because the Duo has been running for around 3 yeas with no issues other than the original drives supplied didn't work so I bought 2 Samsung 2tb drives. These have been running fine for over a year.
It seems a little odd that both drives would fail so close together so I am suspicious that this is an issue with the NAS corrupting the drives some how.
Does anyone have a view on this or what i can do about it? - Try linux reader to get the files off (http://www.diskinternals.com/linux-reader/)
Also check the SMART stats on your PC for the drive. Acronis disk monitor will show them. - Owngoal, it sounds like you removed the good disk and the disk that remains in the duo is bad, or possibly your chassis has been damaged by your power event. Do you use surge protection?
I assume you have not formatted the disk or written anything to it while it has been out of the NAS?
Try to power down, reinsert disk 2 (the one you have tested), remove disk 1 then power on.
If this works you will need to replace disk 1 with a good disk to re-establish a redundant volume. Test disk 1.
If it doesn't work you could try:
Inserting the disks into another duo if you have access to one or,
cloning the disks and trying the cloned disks in the duo - there is a lot of information on the forums about this.
Then backup all of your data and buy an UPS. - Both disks might have failed - several studies have found that multiple drives fail in RAID arrays more often then random chance would predict.
Anyway, I'd try linux reader first (on drive 1), and make a backup if possible before trying vandermerwe's procedure. I agree with the advice to get a UPS. - Thought I better clarify I was replying to the OP albeit 2 months late.
Jimbobaggins' problem is different and would require the technique suggested by StephenB, or cloning.
My other suggestion assumed the disks had been in a RAID volume.
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