Alan, thanks for your answer, there is a VSE 2.3 on the system which supports ESS. So I will bite the bullet, define the lcu as 3990-6 and install the ptf to be sure that nothing will happen.
Franz Josef Pohlen ----- Original Message ----- From: "Alan Altmark" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, January 18, 2006 11:44 PM Subject: Re: [VMESA-L] Control unit emulation on ESS > On Wednesday, 01/18/2006 at 01:39 CET, Pohlen Mailinglist > <[EMAIL PROTECTED]> wrote: > > is there any significant functional difference on an ESS between the > > emulation of an LCU as 3990 Model 6 or 3990 Model 3. > > If you don't have any guests who have ESS support, then you *might* be ok. > But a guest will be able to tell that the device is really ESS and may > expect certain functions to work, which won't unless the PTFs are applied. > > Of course, the official answer is "You must apply the PTFs listed in the > PSP bucket and any subsequent PE." > > Alan Altmark > z/VM Development > IBM Endicott > >
