You could, but I wouldn't want to admit it in public. "Christmas is a funny season. What other time of the year do you sit in front of a dead tree and eat candy out of your socks?" Gordon Wolfe, Ph.D. (425)865-5940 VM Technical Services, The Boeing Company
> ---------- > From: Schuh, Richard > Reply To: VM/ESA and z/VM Discussions > Sent: Thursday, December 8, 2005 10:08 AM > To: [email protected] > Subject: Re: 2nd-Level VM Install Question - Side question > > Can't you accomplish the same thing by (ugh) creating TSAF virtual machines > in the 1st and 2nd level systems and connecting them via VCTCA? > > -----Original Message----- > From: VM/ESA and z/VM Discussions [mailto:[EMAIL PROTECTED] Behalf Of Shimon > Lebowitz > Sent: Thursday, December 08, 2005 9:12 AM > To: [email protected] > Subject: Re: 2nd-Level VM Install Question - Side question > > I was going to write what Gordon said, but he beat me to it. :-) > > One point to add - > I did not use to have real CTCs that connected an LPAR > to *itself* (until I did my big multi-lpar CTC study about > a year ago), but I *did* have 2 VM nodes in different LPARs. > > By attaching one local end of the CTC to the virtual machine > hosting the second-level VM (in System-B), I basically created > a linear network like this: > > Node B ------- Node A---------Node X > (1st level) (1st level) (2nd level) > > Node X accessed my 1st level SFS (in Node B) > via Node A, with no problems whatsoever. > It felt a bit funny sending data on a two-way > round trip to Node A, just to get it into the > 2nd-level VM, but it was still as fast as ever. :-) > > Note that the ACTIVATE ISLINK commands were done in > nodes X and A, nothing at all was done in B. If you > already have such a CTC, the whole setup is about > a minute! (One ATTACH to give a CTC address to the > 2nd level host machine, and two ACTIVATE commands). > > Shimon > > > Quoting "Wolfe, Gordon W" <[EMAIL PROTECTED]>: > > > A great way to do this that takes a little setup is to do the following: > > > > Set up a real channel-to-channel on your system with two addresses that > > talk > > to each other on the same LPAR. A virtual channel-to-channel will not > > work > > with a first-level system. > > > > DEDICATE or ATTACH one end of the CTC to your second-level system. > > > > Start up an ISFC connection between first and second level over the CTC. > > This requires only two CP commands, One command on each system. > > > > Set up the first level shared file pool server as a remote filepool. > > > > Then you can trade files back and forth using this filepool. > > > > I've been doing this for years and it works great! > > >
