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Easier to upgrade to 4.0 from 3.01 or clean install?


Hooch Holly (7441724) | asked Jul 26 '13, 9:51 a.m.
retagged Jul 26 '13, 1:09 p.m. by Michael Afshar (7014)

We need to migrate from 3.01 to 4.0.     Is it easier for me to do an upgrade in place, or should I start over on a clean server?

Thanks!

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KrishnaKanth Naik (7651915) | answered Jul 26 '13, 9:59 a.m.
JAZZ DEVELOPER
edited Jul 26 '13, 10:01 a.m.
Hello Hooch

Upgrading to 4.x is relatively easy. If you are Ok to just start over on a clean server[which would imply that you have relatively lesser data that you are bothered of], I would definitely recommend you to try the upgrade option. But, please upgrade to 4.0.3 instead of 4.0.

Here is an interactive upgrade guide that will ease your upgrade:
Interactive Upgrade Guide
Hooch Holly selected this answer as the correct answer

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Karl Weinert (2.0k42636) | answered Jul 26 '13, 10:00 a.m.
JAZZ DEVELOPER
Unless you are starting over with all new data you should perform the upgrade.

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Abraham Sweiss (2.4k1031) | answered Jul 26 '13, 10:01 a.m.
Hello Hooch,

If you do not want to lose any of the existing data, then migration would be the best option.  However if the 30.1 is running on a 32bit machine, then I would  suggest upgrading to a 64bit platform which has enough ram to support 4.0.x.   
For 4.0.x we suggest to have min=max heap to at least 4gig for each server...along with enough memory to support native memory requirements.   As a rule of thumb I like to suggest never exceeding 50percent of available RAm for processes running on the o/s.  So if RTC has 4gig allocated, then there should be 8gig ram  available to the host.

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Hooch Holly commented Jul 26 '13, 10:20 a.m.

Thanks, the target machine is currently at 6GB, I will request to have it bumped to 8GB.

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