Library Issue and Media Server

Hi Experts,

We have One master server 7.6 in Windows 2008 and 2 Media servers are in Solaris in our envionment. 8 Drives are shared in All the three servers.

I dont know its shared it or not but it shows 3 paths when we click on one drive one for master and two for media server.

1:- I need to know where should we enable the bptm logs for drive issue etc?

2:- What is the use of sharing these drives to 3 servers. Is SSO licence used to share the drive here?

3:- Drive path gets down daily but library console shows every drive is up. so what should be done here? is it imapacting something ? so error 98 code is related to it?

4:-  what is the role of the 2 media servers here?

I am unable to understand my environment so pls let me know.

Thanks so much,