On Mon, 26 Jun 2006 12:27:38 -0500, Phil Tully <[EMAIL PROTECTED]> wrote:
>The IFL is just like any other IBM CPU which has backup processors already >designed into the CEC. So just like you don't usually buy a spare CPU for >z/OS you wouldn't buy a spare IFL > >phil Nope I run 2 cpu's z/os on 2 sites doing Data sharing and i use dynamic VIPA between the 2 z/990 balancing loads and using also either site as takeover site ( even if i need CBU) These 2 computer rooms , are there because you could lose one .( and it has happened ), or you can lose one part of the nework , or your front end firewall etc ... If i was running my WAS on z/linux i would be obliged to do the same . For our distributed world we run in the same way like for z/OS and keep running on the remaining site . We are using clustering all the time , Lotus Notes for example is balanced on 2 servers (windows) on 2 sites , and you could kill one any time ( accident , maintenance , whatever ) , it keeps running on the other side . With vmotion we can move a live linux partition from one place to another without the user even knowing it . Of course the SAN are replicated in both sites like the PPRC for Z/os The WAS are balanced between both sites , the firewalls , etc .. Mixing loads of light and busy lpars on 2 sites allows you to have security even if it is not perfect . Bruno Bruno(dot)sugliani(at)groupemornay(dot)asso(dot)fr ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
