Earlier this month, I posted about one of my drobos apparent disconnecting. http://www.drobospace.com/forums/showthread.php?tid=972
In the course of the troubleshooting that followed, I have come to realise that said disconnection was the result of another problem, rather than a problem in itself…
What seems to be happening is that one of my two drobos slows down so much that whatever application is accessing it, treats it as having been disconnected.
Said apps include plex, vlc, and drobo dashboard.
My drobo’s are daisy-chained via firewire 800 to a mac mini, and i’ve since done all the expected cable testing - switching to new cables, just in case, and have determined that cables are not the problem.
Capacity of the drobo in question is around the 40%full mark, with all files being either audio or video files. About 1.5TB of that is my iTunes library.
Although the slowness issue sometimes manifests itself even when simply browsing through the folder structure, with a good number of seconds passing as each folder is opened, it is most evident when attempting to watch a high-definition movie. What happens here is that eventually - maybe after a minute, maybe after ten minutes, the video will freeze, maybe try to continue after a while, with playback being subsequently aborted.
The bitrate being used for HD playback (according to plex) is always under 14 MBit/s also, there is nothing else accessing the drobo during playback.
After the procedure as detailed in my previous post mentioned above, it seemed that the issue had been resolved. Yet, now, the same HD movie that a few days ago seemed to play fine from start to finish, suffers the same fate of playback abortion.
Can anyone guess at what could be happening here? Is the drobo itself faulty? The HD files play just fine on other 5400rpm drives.
I have no more ideas for solutions at this point…