Yes, though there is almost nothing you can tune.  Search on the internet 
for the document entitled "San Foundation Suite Tunables".

We have also found that our library vendor does not actually support using 
the qlc driver with their libraries, as it does not comply with the 
fibre-channel standards (their words).

I have to admit from what I can see there is no provision to do things 
like use ADISC in place of PLOGI, for adjust timeouts.  The driver is 
really designed for disk, not tape.   I reckon it highly likely to get 
problems in SSO environments.

William D L Brown