I was doing an upgrade last night from a small 9406-520 to a new power 6 one core using an LTO-4 tape drive, and the restore was actually about 1/2 the time it took to do the backup on the 520 with an LTO-3.
I think IBM might want to change their marketing program to "POWER 6 - It's faster than Cat Sh1t". Well, perhaps this is why I don't do the marketing and just the technical stuff. :)
But I have done over two dozen Power 6 upgrades so far, and they are just amazing. They IPL like lightening. The only thing I do not like about them, is the power connection on the back. Very easy to knock the power cords out, and I have done this on every install so far at least once (One machine I knocked it out 3 times). Luckily, I have ordered every machine with dual power, and I would HIGHLY recommend that everyone who orders these boxes insure they have dual power. Someone must have been drunk at IBM when they designed the power connectivity. They don't have one of those large rings to insure the power stays connected, and the plugs don't snuggly fit in.
One of the machines I recently upgraded was running Domino, and it was always slow to come up on the 9406-520. With their new Power 6 520, it was up almost instantly. In addition, everything was just flying through that customers machine. It made them extremely happy.
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