04-21-2014 02:15 AM
I'd like to greet all of you, since it's my first post on this forum.
I've been struggling with my iomega NAS (4x1TB Seagate drives) for last four days. On 18th April I've received an automatic email from the dashboard saying
"Data protection is being reconstructed. Data is available during this operation, however performance may be degraded."
After that, the NAS started 'Data recovery procedure' which lasted almost 12 hours. All of the data was available, although performance was a little bit slower. I've had some problems with connecting to NAS via web browser, but I've found a solution with connecting NAS to computer with Ethernet cable, which solved that problem. The next day, when recovery was finished, it sent another, quite surprising message.
Drive number 1 encountered a recoverable error.
That being said NAS started recovery procedure from the scratch. Even though that mentioned drive has failed, everything worked fine. I've done some reaserch on this forum and it seems that some people encountered similar problem which could've been solved with HDD replacement. Unfortunately all shops are closed (since it's Easter time) but I've ordered new drive with the same specs as those used in my RAID.
Everything seemed to be fine untill yesterday. Suddenly I received new message which said
Storage failed and some data loss may have occurred. Multiple drives may have either failed or been removed from your storage system. Visit the Dashboard on the management interface for details.
With that being said all of the drives disappeared (none are reacheable). NAS sees 4 drives inside, with total capacity of ~7,8TB, but it says that the usable volume capacity is equal to 0.
Now to my question. Is it possible that during some strange circumstances NAS lost its preferences and resetet the RAID settings? It's quite unbelievable for 4 drives to dye simultanously. Is there any way to recover at least some data if it is NAS that failed?
04-21-2014 01:22 PM
Is your device still covered by the warranty? What RAID configuration was the device set to?
It could be that two hard drives failed in which case the data would be lost. Try powering down the device and reseating the hard drives in their slots and then powering the device back on.
04-21-2014 03:37 PM
04-23-2014 12:07 PM
Since you are still covered by the warranty, technical support is free of charge. I would recommend contacting them to create a ticket. They may be able to rebuild the data from the RAID.
04-24-2014 12:56 AM
Same issue happened to me... I just posted a new forum on this as well... The dashboard message are VERY missleading... DO NOT accept the option if you get anthing that states A DRIVE as this deleted all 4..
04-27-2014 02:42 AM - edited 04-27-2014 03:12 AM
Thanks for showing interest in my issue. Unfortunately I wasn't too sure about sending NAS to tech support, as there was too much risk of loosing my data.
Therefore, I dismounted all 4 drives from NAS, put them into Mac computer and downloaded UFS Explorer RAID . With all that done, I used that app to create virtual RAID 5 using all four drives. To my surprise, I was able to mount all drives and see all data stored on those drives. I was extremely relieved, as I managed to copy everything to external HDD.
However, while copying data, one of the drives (the one which was told by NAS to be faulty) overheated which caused crash of the process. I succeeded in copying, but it took some time, as I had to shut everything down and wait for that drive to cool. Hence my question - is it possible, that the failure was caused by overheating in NAS case? I'm quite concerned of the fan's rpm, it's only 780-800, which seems to be very slow.
Sorry for such a long post, but I'd love to get everything straight There is still one more thing. After I had rescued all of the data, I reseated 4 drives in NAS case (3 old, and 1 new instead of the faulty one). It started the "Data rencostruction" process, and the funny thing now is that NAS Dashboard says there are 4 drives, with total capacity of 5,5TB (which seems ok), but it says that all of that space is free (?!). How come, since all of the data is still on the drives? Is it possible, that by putting fresh drive it erased whole RAID? Even if it did, the Dashboard remembers all folder and access settings (users, their passwords, I can even mount seperate folder, but there is nothing in it). Are those settings stored in some NAS built-in memory, or maybe those files and data is somewhere there?
I am realy curious and eager to understand what is going on. Im struggling, whether continue using iomega NAS or try something different...
Once again, sorry for such a long post, but it might help someone
One more question. I had two ISCSI drives on NAS. I recovered two files, 100GB and 500GB, which seems to be those drives. Have you got any idea how to mount them back on NAS to make them work properly? Is it even possible?
04-27-2014 11:40 AM
That fan speed is pretty normal actually. It was most likely just a bad drive that failed. The device either thought they were new drives and erased the data or the data from the previous RAID was lost so it could not rebuild it. Sometimes the share structure and users are still there. I would recommend doing a full factory reset to try to clear everything out and start new. Then you can transfer the data back to the device.
07-02-2015 07:19 AM
As far as i know there is 4 Drive bay in a MAC System and one of them is for the SYSTEM.
i have four drive in the raid so how can i recover them by connecting them all in mac or you did one by one or 3 drives only.
Please let me know becouse my Storage has also failed and i need the data very badly or i loose my job.
07-02-2015 10:57 AM
07-02-2015 11:46 PM