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Forum Discussion
Please remove inactive volumes in order to use the disk. Disk #1,2 - #25684491
Hello all,
We ran into an issue with our ReadyNAS 316 running firmware 6.2.4 . We started accessing files this morning when the iSCSI drives stopped responding and disappeared f...
I've had a 204 for about a week from new, bought discless, and I filled it with four 3TB WD Green drives and updated to the latest firmware (6.4.0). Two drives (1 and 2) are a few months old and two (3 and 4) were brand new; the used ones had their partitions deleted and all were formatted in the 204. I set up a RAID5 array across all drives and populated it with six shares, all accessed via a single user account. I back up my two home PCs and one work PC, all via FTP, a total of about 1TB of data out of an available 9TB nominal. Today I had a problem with the sync program at work not running, so I accessed the box via FTP, to find that all the shares were there but most were empty. Accessing the admin page just got stuck - it showed the initial screen after logging in and kept refreshing. When I got home I found the LCD panel showing DEGRADED, and accessing the 204 via the local network showed the capacity of the entire array to be zero, and all the drives shown in red. The log shows disc 4 and disc 2 failed within one second of each other. I restarted the box and nothing changed, so I've destroyed the RAID array and set it up again from scratch. I can't believe this is a double disc problem, as the chances are tiny. Fortunately, the data is still on the source computers, but I am concerned this has failed so drastically after so little time. The whole purpose of a backup drive, that I've invested hundreds of pounds in, is to provide security for my important data. If anyone can shed light on this I'd appreciate it, as if it happens again I will need to find another backup system.
Double disk failures perhaps happen more often than you think. There are certainly posters here who have lost arrays due to double failures. Even with RAID you do need some form of backup.
That said, I suggest you use your 90-day phone support, and open a case. Netgear should be able to do a deeper dive into your logs, and may be able to sort out what happened.
With the failure rates of modern discs, to have two genuine failures out of four discs one second apart is so unlikely the odds against it are astronomical. There's clearly a common cause, especially since both drives now appear to be working fine again. As this system IS my backup I am not going to back up my backup - this is just my insurance against something happening to the original data.
I've set up a new array now and I waited until it had finished syncing before re-creating the shares. Now I'm copying the data back again, and will watch it carefully. If the wheels fall off again I'll return the box as faulty and buy another brand, as a backup system I can't trust is no use to me.
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