In previous posts we have covered the upgrade part for SharePoint portal server 2003 to SharePoint 2007 now we need to be clear about how we can upgrade to 2010 by listing some considerations before we start the process.
The only supported platform you can upgrade to SharePoint 2010 is SharePoint 2007 it has to be at least service pack 2 (build 184.108.40.20621) or later.
An in-place upgrade takes place when you install SharePoint 2010 on your existing SharePoint 2007 machines. It functions nearly the same as the in-place upgrade from SharePoint 2003 to SharePoint 2007 but most probably your SharePoint 2003 servers are running on 32 bit environment which limits the validity for this option.
An in-place upgrade runs on your existing SharePoint 2007 hardware and maintains all your URLs.
This is a good fit if you want to upgrade a small environment and use the same machines and URLs.
A database attaches, you take databases from a SharePoint 2007 farm (service pack 2 or later, of course) and you attach them to a fully functional SharePoint 2010 farm. When a database is attached, SharePoint 2010 will upgrade it and render its content. You are allowed to attach content databases, Microsoft Project databases, and SharePoint profile databases to a SharePoint 2010 farm. This method requires SharePoint 2010 be a new installation on new hardware, and this option is the most appropriate in this stage when upgrading from 2003 to 2010.
Both of these methods require some planning and testing to be successful. The most useful tool you can use to discover any upgrade issues you have in SharePoint 2007, and determine how much trouble they will be to upgrade, is SharePoint 2007. In service pack 2, Microsoft introduced a new
STSADM operation, preupgradecheck, which scours your SharePoint 2007 farm looking for problems.
While running preupgradecheck is not required when doing either type of upgrade, it is recommended.
It will do a thorough inventory of your SharePoint 2007 farm and report any problems it finds. Not only can these problems impede your upgrade, it may be beneficial to your existing SharePoint 2007 farm to fix them sooner rather than later. Even if your farm does not have any issues, the report that preupgradecheck creates is a good point-in-time snapshot of your farm that is very easy to create.
This file is where you can get in-depth information about your farm. The following figure shows the first page of this report.
Here is a partial list of the problems preupgradecheck looks for:
Now we have SharePoint 2007 site hosted in lab environment , we will proceed by creating web application in SharePoint 2010 we will start by Running the pre-upgrade checker (on Office SharePoint Server 2007 environment)
Click Start, right-click Command Prompt, and then click Run as administrator.
In the Command Prompt window, navigate to the following directory:
%COMMONPROGRAMFILES%\Microsoft Shared\Web Server Extensions\12\bin
Type the following command and press ENTER:
STSADM.EXE -o preupgradecheck
Create a web application that will host the site using central administration
To Verify custom components availability Click Microsoft SharePoint 2010 Products.
Right-Click SharePoint 2010 Management Shell. And select Run as administrator
At the Windows PowerShell command prompt, type the following command:
Test-SPContentDatabase -Name <DatabaseName> -WebApplication <URL>
F-Attach a content database to a Web application by using Powershell
Mount-SPContentDatabase -Name <DatabaseName> -DatabaseServer <ServerName> -WebApplication <URL> -Updateuserexperience
To view the Upgrade Status page
To open the upgrade log file
I need to highlight addition Areas that will affect the upgrade process that you need to plan for
Upgrade Risks and Mitigation Strategies
Key upgrade risks and possible mitigation strategies to consider during the migration:
SharePoint 2010 offers an upgrade risk mitigation feature called visual upgrade, which allows backward compatibility with the 2007 user interface (UI) and therefore enables a gradual transition for migrated sites to the new 2010 user interface experience. Visual upgrade is essentially an upgrade option that separates content database data upgrade from 2010 user interface upgrade
Both site collection owners and site owners can preview the new user interface. They can also switch between the previous and new user interface to verify that everything works correctly.
To preview the new UI:
However, if a site has a custom master page, the administrator should:
NOTE - Be aware that when the site admin makes the switch to preview the new UI, the change appears for all users and not just the administrator. In order to avoid end user confusion, administrators should consider making the change during non-business hours.
Since it is challenging to avoid downtime during an upgrade, an assessment needs to be done beforehand and after the staging iteration to find the most effective approach to avoid downtime.
There are a few steps available that can be taken to substantially reduce the time taken to upgrade content databases. Also, these steps need to be carried out on the SharePoint farm and requires separate approval from the customer. The steps to reduce the upgrade time are as follows:
Web Application URLs
An important upgrade decision that will need to be made is whether the SharePoint farm will persist the existing web application URLs or if the new SharePoint 2010 farm web applications should get new URLs. Reusing the existing URLs will reduce the complexity of the upgrade, as hardcoded links will continue to work, reduce end user confusion, and reduce the end user training required.
Based on this , if old SharePoint farm is to remain, then the old SharePoint web application URLs will change
Increase Upgrade Confidence
In order to reduce upgrade risks and build confidence in the ability to execute the upgrade process successfully it is recommended that “Upgrade Testing” performed prior to the production upgrade. Upgrade testing is a cycle of test upgrades in a SharePoint 2010 test environment used to remediate upgrade issues and is specified at a high level below:
STEP 1 – Prepare a SharePoint 2010 upgrade test environment
STEP 2 – Perform a database attach upgrade in the test environment
STEP 3 – Review upgrade log files for upgrade errors
STEP 4 – Remediate upgrade errors
STEP 5 – Restart the upgrade of the content database
STEP 6 – Go to STEP 3
Continue this upgrade testing until an appropriate level of confidence is built for the production SharePoint 2010 upgrade transition.
Now it worth's to mention here the upgrade option to SharePoint 2013 that it does not support in-place upgrade for an existing environment,You must use the database-attach upgrade method to upgrade your databases to a new environment ; the upgrade process has changed to separate upgrade of the software and databases from upgrade of the sites. for more information about SharePoint 2013 upgrade please check the links http://technet.microsoft.com/en-us/library/cc262483(v=office.15) and http://technet.microsoft.com/en-us/library/ee617150(v=office.15)