I've read several times, that you shouldn't use USB device with FreeNAS (directly attached, besides the Boot-Stick).
Like:
Why is that? Did FreeBSD a poor job? Or FreeNAS? Or is it complicated, because of ...? Is there a bug report regarding this? Or is it simply (for the experts) a dead connection and they don't care for it?
And even more interesting, what are the occurring problems?
Are there just problems when connecting it, so it doesn't work always on the first try, but when it does it runs?
Or does it randomly loose the connection?
Basically I'm trying to understand it and evaluating, if an USB-HDD is reliable (enough?) for a backup via local data replication. Or if I need to find another solution. (See this thread).
What about hot plugging and USB?
According to this member even with eSATA you shouldn't do that ...
For both problems (USB reliability and hot plugging with both connections):
Are this issues across the board or do they depend on the system? Could I (extensively) test my system if it will work correctly or see it by the used hardware?
If so, how?
Like:
Don't use USB attached anything, (flash, or spinning), for long term attached storage. SATA, eSATA or SAS is best.
USB is the problem, or rather, the lack of XHCI support and the craptastic quality of your average USB/SATA bridge.
Why is that? Did FreeBSD a poor job? Or FreeNAS? Or is it complicated, because of ...? Is there a bug report regarding this? Or is it simply (for the experts) a dead connection and they don't care for it?
And even more interesting, what are the occurring problems?
Are there just problems when connecting it, so it doesn't work always on the first try, but when it does it runs?
Or does it randomly loose the connection?
Basically I'm trying to understand it and evaluating, if an USB-HDD is reliable (enough?) for a backup via local data replication. Or if I need to find another solution. (See this thread).
What about hot plugging and USB?
According to this member even with eSATA you shouldn't do that ...
Your advice and experiences with eSATA?Just a work of advice... Do not hot plug the eSATA drive. Shut down your system, connect the drive, power up your system, import your pool, do your backup, export your pool, shut down, disconnect the drive, and power your system back up. If you try to do things otherwise, well you risk data loss.
For both problems (USB reliability and hot plugging with both connections):
Are this issues across the board or do they depend on the system? Could I (extensively) test my system if it will work correctly or see it by the used hardware?
If so, how?
Last edited: