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What to expect when migrating SAP BW 3.5 to 7.0

How much downtime is typical when migrating multiple systems? Expert Jay Narayanan sheds some light on the matter.

Our company is currently running BW 3.5 and looking at upgrading to 7.0 shortly. I have heard that the migration is not seamless and entails a lot of manual configuration, which will have a big impact on the business should the system need to be off-line while these manual configurations are done. Can you give me a bit more information about what we can expect with such a migration?
Upgrading all systems in the SAP BW landscape might take a couple of months or more depending on how much time companies give for preparation and testing. Normally the upgrade process for one system can be done in a weekend and down time of a day or two will be good enough.
This was last published in February 2007

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