Forum Discussion

Guide

Aug 29, 2018

Solved

JBOD (Single)-function (2 HDDs as 2 independent drives) on USB

Hello, I'm trying to set up a JBOD box (IcyBox IB-3662U3) with 2 HDD as 2 independent drives on a one of the USB port. The RN31600 only recognize 1 HDD. Windows or MacOS recognize and mount both...

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StephenB
Aug 30, 2018
komm_it wrote:

Well, perhaps a new 4 drives NAS set up as JBOD is actually a better / safer solution…

I think it is safer, but your approach does allow you to remove the drives and access them directly with ext, which is a plus.

mdgm-ntgr

NETGEAR Employee Retired

Aug 29, 2018

I don't think so.

Btw if you download the logs what is the date in bios_ver.log?

komm_it

Guide

Aug 30, 2018

Ok thank you.

Could a newer bios do the job?

/sys/class/dmi/id/bios_date
::::::::::::::
11/06/2013

mdgm-ntgr
NETGEAR Employee Retired
Aug 30, 2018
No. In any case you already have the latest BIOS for your ReadyNAS installed.

What the latest BIOS does have is a USB3 F/W update.
- komm_it
  Guide
  Aug 30, 2018
  Well, actually, after having created sharepoints on both drive separatly (only one drive physically connected at a time) and connecting both drives again, I can see and access (r/w) both sharepoints via SMB and FTP…But the system only recognises 1 physical USB HDD
  
  Could this set-up be reliable and what could be the possible drawbacks of such a set-up?
  - StephenB
    Guru - Experienced User
    Aug 30, 2018
    Personally, I think it is better to set up the NAS with enough capacity to hold your data on internal drives.
    
    If the drives are disconnected for some reason (or if the NAS has the power cut) you might end up with "dirty" volumes (due to lost cached writes). While this can also happen with internal volumes, the risk is higher with external drives. I suggest protecting the IcyBox and the NAS with a UPS (a single UPS protecting both devices, with the NAS monitoring the UPS over USB).
    
    If you don't have any linux systems (apart from the NAS) you might try installing R-linux for Windows, and see if it can read the volumes (with the Icybox connected to a PC). https://www.r-studio.com/free-linux-recovery/