I have some Brocade DS5100B switches (coming with EMC CX4-240) it running FOS v6.4.
According documentation for FOS 7.x - DS5100 is supported for upgrade.
is there any caveats with upgrade?
i nervous about fabric, config and installed licenses.
FOS 7.x is fully supported on DS5100B and you shouldn't have any issues upgrading the FOS. As a good practice, review the Release Notes of the destination FOS release in order to check special condition that you may need to take into account.
thank you for answer!
if i upgrade and reboot one switch in fabric, FOS 7.x will countinue to work in one fabric with FOS 6.4? in theory, of course ;)