z13 and z13s DO support IBF and it is available. You sure you don't mean z14 Models ZR1 or LR1? If this is the case then, it isn't!
For additional info either refer to the announcement letter or the following Tech Doc Number WP102752 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
