We received our DS6800 just after GA (August 2005), initially on a z/890 under z/VM 5.1 and then 5.2.
We never had an upgrade "take out" z/VM. However, during one of our microcode upgrades, it prevented all dasd I/O for about 10 minutes. I don't have to, so I don't, do microcode upgrades during the day. I reserved it for weekend work. However, I don't take the processor down for the upgrades. We will be doing one in another couple weeks. I plan on running system backups concurrently with the upgrade to see if we still had the I/O delay problem. Tom Duerbusch THD Consulting FELINE PHYSICS: Law of Cat Inertia A cat at rest will tend to remain at rest, unless acted upon by some outside force - such as the opening of cat food, or a nearby scurrying mouse. >>> Crispin Hugo <[EMAIL PROTECTED]> 9/9/2007 1:14 PM >>> Anybody out there using DS6800 with z/VM 5.2 or 5.3 . We are having problems that anytime we update the software on DS6800, it takes out z/VM. There are 4 FICON channels. DS6800 disables 2 at a time as it does upgrade. VM can't seem to cope with this ? Crispin Hugo Systems Programmer, Macro 4 < <http://www.macro4.com/> http://www.macro4.com/> Macro 4 plc, The Orangery, Turners Hill Road, Worth, Crawley, RH10 4SS Direct Line: +44 (0)1293 872121 Switchboard: +44 (0) 1293 872000 Fax: +44 (0) 1293 872001 ________________________________________________________________________ This email has been scanned for all known viruses by the MessageLabs Email Security Service and the Macro 4 plc internal virus protection system. ________________________________________________________________________
