Rob's point about the Memo to Users is a very strong piece of advice. Both V6 and V7 versions.

Most of my clients have done exactly what your suggesting, cutting over in a weekend. That said, they have a solid application test plan in place and the development staff ready to take on any problems found, although honestly most of the issues are reasonably minor.

The one spot that can cripple an upgrade is in SQL. At V6 there were some changes made to SQL to enforce some rules in joins to ensure the result sets. There are workarounds if you get into that situation, call IBM support for advice.

Most customers take about 6 - 8 hours by the time you do the upgrade, apply PTFs and get the system about ready for testing. The larger the system (more disk arms) the faster. I have seen that finish is as few as 4 hours and on very small systems take longer. I would leave a solid 8 hours for testing and remediation. You most likely won't need it, but better safe than sorry. None of this time takes into account the save activity that needs to be done.

Remember to log all IBM supplied objects that have been changed, IE: Print files, subsystem descriptions, job descriptions, etc.... If they are overlaid by the upgrade you'll need to reset them.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects

On 10/31/2012 11:20 AM, rob@xxxxxxxxx wrote:

I'd be willing to venture that a lot of people have. However, you'd
better darn well make sure you read and understand both the
V6R1 Memo to Users
and the
V7R1 Memo to Users
Not only the MAJOR anzobjcvn concern, but the other concerns noted.

My personal preference is to upgrade the old server from V5R4 to 7.1 first
and then load that on to the new server. Now, your old server may not
support 7.1 but there's charts to check. It will add some time to the
process. I'd do that one weekend and the hardware swap another. As 7.1's
been out for a few years now you have had the time...

Rob Berendt
-- IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600 Mail to: 2505 Dekko Drive Garrett, IN 46738 Ship to: Dock 108 6928N 400E Kendallville, IN 46755 From: Billy Waters <bwaters@xxxxxxxxxxxxxxxxxx> To: "midrange-l@xxxxxxxxxxxx" <midrange-l@xxxxxxxxxxxx>, Date: 10/31/2012 12:00 PM Subject: V5r4 Upgrade Sent by: midrange-l-bounces@xxxxxxxxxxxx We are in the planning stage of migrating from V5r4 to V7.x loaded to a new server. Is anyone willing to share their time line related to testing this process? My boss is under the impression we can do this "cutover" over the weekend without any prior testing on the new server / OS. Thanks in advance for your assistance. Billy Waters

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