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Solved
ReadyNAS104 USB device not accessible
I have a RN104 running OS 6.4.2 with 2xWD Red 3TB + 2xWD Red 4TB drives.
Desiring to back up my data, as one of the 3TB drives is showing 21 uncategorized S.M.A.R.T. errors, I purchased an IcyBox 2 bay RAID enclosure with USB 3.0 (Model AU IB-RD4320StU3) and two WD Red 6TB drives to put into it and set them up as a striped array (RAID 0), giveing me 12 glorious TB of backup headroom. The array is formatted as FAT32 (ExFAT with Boot Sector via my iMac).
Plugging the external enclosure into the ReadyNAS results in a massively unhelpful log message "System: External storage device is connected but the file system is not recognized." however the USB device is not visible in the Admin webpage for the RN104. Therefore I am unable even to format the USB drive via the RN104.
At the moment I am backing up the existing 3.01TB of data from the RN104 via the network and USB 2 on my iMac - a very painful business.
Can anyone suggest why I am having this problem, please. I have almost reached the point of retiring the RN104 in favour of hardware that works. This is not the first, nor even the twenty-first annoyance visited upon me by Netgear.
Hi BrianM1950,
For more information about the supported file system (external USB devices), kindly check these articles.
How do I backup data from my ReadyNAS OS 6 system to a USB disk?
Kind regards,
BrianL
NETGEAR Community Team
5 Replies
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RAID enclosures could require specialised drivers or software to work. So there's a high chance that they won't be compatible.
Could also be that OS-X's ExFAT format, which happily allows for a 16TB volume, is just not readable by the RN104. As for special drivers, maybe: the device just presents to Windows and OS-X as a large volume and doesn't require any drivers. I shall try a few other formats first. If I can come up with one which the RN104 recognises, then I'll be able to use the USB 3 speed for the backup, which will be nice.
It seems that the RN104 is happy with OS-X's default journalled format, which it reports as HFSPLUS. So far so good with sending backups to the device.
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