[Drupal] How long would it take to upgrade from Drupal 6 to Drupal 7?
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BY Anoop John
7 years ago
Drupal-Solution
0 comments comment

With Drupal 8 in the works a lot of Drupal 6 sites are currently upgrading to Drupal 7. We get quite a few queries on Drupal upgrades and almost everybody asks for a fixed price estimate for the process. In theory Drupal 6 to Drupal 7 upgrade process is an automated process (except for the upgrade of theme and custom modules) and all you have to do is to take the site through a set of standard steps for the upgrade. However upgrades don't always work like that.

There are quite a few factors that affect the duration of a Drupal upgrade process. Most of the factors are the same as those that affect Drupal updates as well. Here are some of the key factors.

  1. Whether safe practices are followed - backups, trial, testing
  2. Whether upgrade is done right on the production server or on a development server
  3. Whether there is a development server for the site
  4. Whether code is already under revision control
  5. Whether SSH access is available on the servers
  6. Whether there are a lot of custom patches applied in core or contributed modules
  7. Whether there is documentation of the patches applied
  8. Whether there is a lot of custom code that uses functionalities from contributed modules directly (not via an API)
  9. Whether there is documentation about critical functionalities that should be tested after each update
  10. Whether there are a lot of custom modules
  11. Whether there are a lot of contributed modules
  12. Whether all the contributed modules have D7 versions
  13. Whether all the contributed modules have upgrade paths from D6 versions to D7 versions
  14. Whether there are a lot of template files / theme functions
  15. Whether custom code is heavily API driven or whether they are more or less standalone systems

To commit to a fixed price estimate for the update process each of these aspects will have to be evaluated in detail and this might actually take longer than the full upgrade if the upgrade did not run into any issues. So our general practice is to give a ballpark figure of 80 hours and then bill on the actuals based on an Time & Materials (T&M) billing model.

Also note that all custom code including modules and themes that were created for D6 will have to be manually converted to the D7 API and this would take additional time as well. The time for this will have to be custom estimated for based on the number of template files and the lines of code in the custom modules.

Get in touch with us if you are looking to upgrade your Drupal 6 site to Drupal 7.


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on 02nd July 2008 / by webmaster
We have recently completed the development of a Drupal based College Website System. We have also successfully implemented this for one of the prestigious educational institutions in the city. Now we are ready to implement this for any other college/university who wants to have a highly scalable and flexible system at very affordable rates. If you would like us to build your school/college/university website/portal Contact Us Drupal Solution Application Development Education Alumni Portal Leave a reply Your email address will not be published. Required fields are marked * Dileep Kumar (not verified) access_time 28 May 2020 - 06:23 Hello Sir, When I open cptc site scroll bar appear bottom of my PC. Please reply for this comment. Regards Dileep webmaster access_time 28 May 2020 - 06:23 In reply to Scroll bar in bottom by Dileep Kumar (not verified) Dileep, That must be because of your screen resolution. The site is designed to be best viewed at a minimum of 1024x768. Anoop Email list business (not verified) access_time 28 May 2020 - 06:23 It's very interesting to follow the developments of drupal lately and to see how the drupal themes are scaring up against the WordPress themes. Like what you've done with this college campus webpage and all the modules you developed for the theme. Thanks a lot for this blog. Jeremy Dubois (not verified) access_time 28 May 2020 - 06:23 I have been watching with interest the momentum that drupal seems to be building. I use wordpress on my blog but am thinking about diving in and learning drupal. Stan Brower (not verified) access_time 28 May 2020 - 06:23 I am somewhat new in my blogpost and Drupal skills. How do you by-pass the .htaccess redirect rules in regards to the looping issue?  Pagination Current page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Next page Next › Last page Last » Add new comment
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