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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 second USB hub port is connected to a WB Passport 2627 which keeps getting into ready one and causes issues while the backup job runs. this roughly happens once every month sometimes twice. then i have to connect it to windows PC do a scan and fix and then reconnect to NAS.
here is the error it gives "System: External storage 'My Passport 2627' might not have been safely ejected after last use. This device will be read-only. Plug it into its native operating system and repair it before it will be writeable."
question is does readynas has issues connecting two Ext HDD via USB hub. i never had any issues when i connected one Ext HDD directly to 3.0 NAS port directly.
please advice and many thanks for your inputs in advance.
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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?
- 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.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?
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