I have 2 x3850 servers (both servers are member of an MSCS
cluster). The servers are called DBS01 & DBS02 & both run
Win 2008 R2 Enterprise x64.
The way it's connected in this organization is such that FC
switches are dedicated for SAN & another FC switch is
dedicated for backup tape library to connect to.
So DBS01 & 02 each has 2 fibre connection to a pair of
FC switches which SAN storage is connected up : I have
no issue with this as both servers could detect the SAN
Each server has one single fibre connection to an IBM
FC switch which also has an IBM TS3200 tape library
connected to it.
The problem I face is DBS02's Windows can't detect
any Tape Drive while DBS01's Windows detected them:
refer to the attached four screens.
What did I miss? Any specific driver needed? I recall
for DBS01, I did not have to install any driver, just do
a reboot once the IBM 4Gbps FC switch has configured
the port. DBS02 was rebooted several times to no avail.
I've compared the HBA port configurations for both
DBS01 & DBS02 using HBAnywhere & they're both the
same except that for DBS01, the speed is Auto-Detect
while for DBS02, I had to fix the speed at 4Gbps (because
using Auto-detect, the FC switch's port link light kept
going amber for DBS02). I've also tried connecting that
port on DBS02 directly to one of the four tape drive &
HBAnywhere reported the link as Operational / Up.
I've also swap the FC ports ie DBS02 connects up to
DBS01's FC switch port while DBS01 connects up to
DBS02's FC switch port. No joy