Forum Discussion

Tutor

Dec 23, 2020

USB HUB 3.0 with two external HDD

Model readynas 314 i have been using one usb to connect to UPS and utilizing second USB 3.0 port to connect to two external HDD's with a USB 3.0 HUB. it connects and both ext HDD are visible but, the...

mdgm

Virtuoso

Dec 23, 2020

Is the USB hub bus powered or does it have its own external power supply?

What about the USB disks? I think the My Passport is probably bus powered?

If you remove the USB disks are you safely ejecting the disks before removing the USB disks? Or are the USB disks plugged into the hub all the time (except when you need to remove one to repair it)?

If you download the logs, what is the date in bios_ver.log?

aniraghome
Tutor
Dec 23, 2020
Usb hub doesn’t have a power cord it just powers through usb port on nas. Similarly ext hdd are powered though hub.

I dont remove the ext hdd’s at all they always stay connected with nas via the hub. This is because i have daily backup jobs between nas to ext hdd’s.

When i had one ext hdd i use to directly plug it to one of the nas 3.0 ports directly all the time. Never had issues in 6 years. I started getting this issue only after the hub split that too the first ext hdd connected doesn’t have issues its the second one that gives the error.
- mdgm
  Virtuoso
  Dec 23, 2020
  It could be an intermittent problem with supplying enough power for two drives. You could try switching to an AC powered USB3 dock and see if that helps.
  
  If you download the logs what is the date in bios_ver.log?
  - mdgm
    Virtuoso
    Dec 23, 2020
    I meant AC powered USB3 hub.
    
    The reason I ask about the date of the BIOS is that there was a USB3 F/W update in newer BIOS from late 2013.