boot USB device disconnects after a while leading to system crash

[Chessmaster]

I have got a problem on a new installation of FreeNAS-9.10-STABLE-201605240427: Everything works fine and I can configure the system in the WebUI but after a while the USB stick with the installation of FreeNAS gets disconnected and therefore the system crashes. The console says:

Code:

ugen0.2: <JetFlash> at usbus0 (disconnected)
(da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 00 00 88 46 c6 00 00 04 00
umass0: at uhub0, port 2, addr 1 (disconnected)
(da0:umass-sim0:0:0:0): CAM status CCB request completed with an error
(da0:umass-sim0:0:0:0): Retrying command
da0 at umass-sim0 bus 0 scbus7 target 0 lun 0
da0: <JetFlash Transcend 32GB 1.00> s/n [ID] detached
(da0:umass-sim0:0:0:0): Periph destroyed
ugen0.2: <JetFlash> at usbus0
umass0: <JetFlash Mass Storage Device, class 0/0, rev 2.10/10.75, addr 4> on usbus0
umass0: SCSI over Bulk-Only; quirks = 0x8100
umass0:7:0:-1: Attached to scbus7
da0 at umass-sim0 bus 0 scbus7 target 0 lun 0
da0: <JetFlash Transcend 32GB 1.00> Removable Direct Access SPC-4 SCSI device
da0: Serial Number [ID]
da0: 40.000MB/s transfers
da0: 30144MB (61734912 512 byte sectors)
da0: quirks=0x12<NO_6_BYTE,NO_RC16>

After these messages the WebUI and the pc itself doesn't respond to any commands and I have to reset the pc to boot again.
The problem appears sometimes very fast after booting, sometimes after one hour. It appears when I am working in the WebUI but also if the system is just booted and is running without any interaction. I have tried any USB-ports (2.0 and 3.0) available and the problem occurs on all of them.

What can I do, to fix this?
If there are more information needed, will I be happy to provide them, if possible.

 

[gpsguy]

Switch to a small SSD instead.


Sent from my iPhone using Tapatalk

 

[Chessmaster]

Thanks for your fast answer!

I have thought about that, but the plan is to install 6 harddrives in the pc and the mainboard have exactly 6 SATA ports... So a small SSD just for the operating system would block one of the SATA ports, which I would like to prevent if possible.

 

[Robert Trevellyan]

It's either a flaky USB stick or a flaky USB port. Try replacing the USB stick.

 

[Chessmaster]

Seems to be the USB stick. I have tested an old USB 2.0 stick, which is working fine the whole night until now. So I guess I have to buy a new stick...
Thanks for the hint!

 

[SweetAndLow]

When making a post here always make sure to include your hardware you are using. MB, CPU, memory, PSU, HDD controller