ESBT can only be implemented with Prizm and cannot be used as a standalone ESCON to B/T converter. Customers using the FXBT-34600 today, will need to upgrade to the ESBT as part of their Prizm deployment. The ESBT cannot be sold as a firmware update to an existing FXBT or NSBT. i.e. ESBT microcode will not function on FXBT or NSBT hardware.
ESBT supports maximum data block sizes as of 65,535 bytes for Prizm-ESBT applications and require a dedicated/static path. ESBT does not support dynamic switching via ESCON directors, byte mode devices or DASD attachment for Prizm-ESBT applications. ESBT can only be used by 1 LPAR at a time (existing B/T restriction). Daisy-chaining with Prizm-ESBT is not recommended without approval from Optica Technical Services as part of the design process.