20 September 2018
Something is not correct here, the J5000 is a new JBOD and it has no Fibre Channel ports.
The default IP for old VTraks (it could be an Ex10) is 10.0.0.1, you can try and access at that IP. But the previous owner may have set DHCP or set a static IP. The default login/password is administrator/password
There is a simpler option that might work. If you have a MAC, safari can find it via bonjour. Just connect it to your network start Safari and check Bonjour. This will find the VTrak no matter what the IP is, then you can change your MAC's IP to the same network and attempt to login. Apple used to have a Windows version of Safari, but it is no longer available from Apple. If you had downloaded that previously, then that will work as well.
If this does not work you will need a serial port connection. You may need that to reset the password anyway.