> Does anyone here have experience with this kind of setup? There seems to be
> a lot of anecdotal evidence suggesting that USB sticks are unreliable, but
> the little actual research on this topic I can find suggests otherwise [2].
I have not tried exactly the kind of setup you suggest, but have used
somewhat related configurations:
- USB tends to be not 100% reliable. All the disks I've had that were
connected 24/7 via USB have experienced problems at one time or
another, where the problem wasn't with the drive itself but the USB
connection (typically errors that were resolved by rebooting).
I haven't used flash keys in such 24/7 config (these were HDDs
connected via a USB->SATA adapter), so YMMV.
- USB flash keys suffer from "stuttering" (a well known phenomenon in
early SSDs which has been largely solved in modern SSDs), so do expect
your system to "freeze" at times for several seconds while writing to
the flash disk (in my "usb rescue key", that can last up to a few
minutes, tho my setup is pathological since I use jffs2 there (for
compression), even tho it's undesirable on a usb flash key).
- I've found USB flash disks to be reasonably reliable in general, but
one case where I've had trouble is when disconnecting the key while
the system is writing to it. That can lead to severe corruption
(despite use of things like logging file-systems). For a system
running 24/7 that shouldn't be an issue, tho.
Stefan
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