Have you seen any link errors on the switch?

On 08/20/2010 05:28 PM, Dury, John C. wrote:
> We have an STK SL500 tape library with 4 LTO4 drives in it and it seems to 
> randomly take all of the drives offline. STK/Sun has replaced the robot and 
> controller card (more than once) and nothing seems to help. This has been 
> going on for several months now and I'm at a loss to figure out what is 
> causing it. The SL500 and it's drives are all attached to a Brocade DS-4900 
> switch. Nothing has changed on the switch in over a year as putting 
> maintenance on them is a real chore since we have so many devices attached to 
> it.  The only message I see in the act log is:
> ANR8848W Drive WRLTO4-1 of library WRSL500 is
>  inaccessible; server has begun polling drive. (PROCESS:
>  832)
> As best I can tell, it is a hardware problem as even rebooting the robot or 
> power cycling  the whole box doesn't fix it. The robot stays parked at the 
> top and never seems to go through the audit it usually does when it is 
> rebooted. If it is indeed a hardware problem, I realize there isn't much that 
> can be done but they have replaced almost all the parts in the box and it 
> keeps happening. Anyone else ever have similar problems?
> John

--
-- Skylar Thompson (skylar2 AT u.washington DOT edu)
-- Genome Sciences Department, System Administrator
-- Foege Building S048, (206)-685-7354
-- University of Washington School of Medicine