While not really unattended, I have had a BBB running Debian 7 ( wheezy )
for as long as as 45 days with no reboots. I have accessed it via SSH, and
did some testing on it during this time.

A couple of differences here besides the obvious is that I have it powered
via USB ( from a Windows 7 laptop ), and the Debian used is a network boot
configuration. e.g. it uses no emmc or flash media in this configuration.

Anyhow, the BBB in this situation *would* need some form of UPS, as when
coming back up form a reboot( power blip would do the same thing )
sometimes it can hang. Either that or a remote "switch" for resetting the
power on the device. Also as Robert mentioned above read only media would
be a requirement if you expect to get any reasonable life time out of the
device. However, the BBB *can* also boot via a USB device if that is also
an option. I'm thinking hard drive here for longevity but . . .


On Wed, Nov 20, 2013 at 3:07 PM, Bert Lindner <[email protected]> wrote:

> On Wednesday, November 20, 2013 10:24:24 PM UTC+1, Britton Kerin wrote:
>>
>> My BBW worked for a long time with UPS and an "industrial" SD card (which
>> in theory has wear leveling and asynch shutdown tolerance) but now that
>> card
>> has gone unbootable.
>>
>> No level of SD write that should exhaust what flash is in theory capable
>> of,
>> but theory and practice...
>>
>> Any success stories out there using bb in unattended situations?
>>
>> Are the odds perhaps better if you never write the SD or eMMC at all, and
>> if so
>> is there a distribution set up to work this way (ramdisk default or the
>> like)?
>>
>>
>  I use two BBBs in remote locations, running Ubuntu from eMMC. They are
> networked (I can reach them) and if really necessary I could get someone to
> power cycle them the next day, so not sure how far that counts as
> unattended. Remote hands so far have not been necessary though. Have seen
> uptimes over 3 months.
>
> They do write logs (icinga/nagios, cacti, syslog for appliance) but don't
> get rebooted very often so not sure how much this says about the likelihood
> of eMMC corruption issues. I would expect ext4 to catch most of these
> though?
>
> The limited instability I have seen with BBBs is where wireless USB
> devices are used, but even one with two USB wifi adapters has seen uptimes
> over 50 days.
>
> I have yet to experience an eMMC or SD that becomes spontaneously
> unbootable.
>
> Best,
>
> -Bert
>
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