My preference for remote upgrades is HMC with customer opening a
shared session on the local HMC prior. LAN Console works, too - but
is scary because the screen goes away beyond the D900 and doesn't come
back until mid C600 - but if you can handle the terror, LAN Console
works just fine!

For older systems, those TwiNet devices which do Twinax over TCP are
pretty slick. Would recommend remoting-in to a PC at the customer
location to ensure that the comms between wherever you are and that
TwiNet don't cause issues. Not that I've ever had that happen. ;)

Did a min-config (RAID on 3 arms) POWER5 520 (1st edition - 2400 CPW)
V5R3 to V5R4M5 this weekend - holy slow, batman.

jch

On Wed, Sep 16, 2009 at 2:30 PM, Lukas Beeler
<lukas.beeler@xxxxxxxxxxxxxxxx> wrote:
On Wed, Sep 16, 2009 at 21:20,  <rob@xxxxxxxxx> wrote:
No it isn't.  Migrating from one system to another I can definitely see a
little hands on.

Just a few days ago, i migrated one LPAR on a 515 to a Power 520
(non-LPARd), using a Save 21 to a virtual tape, ftp'ing it over to the
Power520, DUPTAP'ing that to the physical tape in the Power 520, and
then reloading everything on the 520 from tape.

All from the comfort of my home, altough it took me from around 18:00
to 06:30...

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