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

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 Dileep Kumar (not verified) access_time 20 Sep 2021 - 21:52 Hello Sir, When I open cptc site scroll bar appear bottom of my PC. Please reply for this comment. Regards Dileep webmaster access_time 20 Sep 2021 - 21:52 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 20 Sep 2021 - 21:52 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 20 Sep 2021 - 21:52 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 20 Sep 2021 - 21:52 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?  AshleySc (not verified) access_time 20 Sep 2021 - 21:52 I was doing some research for my latest fashion post when I came across your lovely blog. Thank you for the information, so refreshing... and I love WordPress :) Latterkursus Peter (not verified) access_time 20 Sep 2021 - 21:52 My old college is really small with only a few hundre alumni. For a couple of years they have been searching for something that can work both as a website and alumni portal. This might be just the trick, I will pass on the link to them Software testi… (not verified) access_time 20 Sep 2021 - 21:52 Of course Drupal is the best solution for a dynamic system. If you need "scalable and flexible for future development" project I can't imagine anything better. :) How much time did it take to normalize existing modules and develop several additional modules for such a project? Will you name it a slight project? Any problems arise? Born4Holdem (not verified) access_time 20 Sep 2021 - 21:52 In reply to Drupal adaptation by Software testi… (not verified) Drupal is good for large scale projects with a dynamic system, but totally unnecessary for a small website or just a blog. Flexibility is a key strength of Drupal. It is quite difficult to learn as it was not born user-friendly, but once you master the key features, it can create amazing websites. Kreikan Matkat (not verified) access_time 20 Sep 2021 - 21:52 Drupal seems like a great fit for webpages. I wonder how it compares to wordpress in the case of plugins and upgrades? luckily there is the free blogger option too :D Omaha SEO (not verified) access_time 20 Sep 2021 - 21:52 Having the event calendar is a HUGE plus. This straight forward feature provides a big value for the community and offers a centralized place for activities to be scheduled. Expandable cor… (not verified) access_time 20 Sep 2021 - 21:52 I agree that Drupal rocks. 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Jey (not verified) access_time 20 Sep 2021 - 21:52 How much do u charge if I require to build a website for my college, similar to the one developed for Central Polytechnic College? webmaster access_time 20 Sep 2021 - 21:52 In reply to How much do u charge if I by Jey (not verified) Hi Jay, The rates will depend on the actual amount of work required for the project. Somebody from the marketing team will be contacting you to get more detials Regards Team Zyxware electronics (not verified) access_time 20 Sep 2021 - 21:52 I have experience working with both CMS systems, I think WordPress is more user friendly and is much simpler than Drupal, but it doesn't make it better. I use WordPress CMS on my cordless phones blogs and it is very simple to work with. I add and edit multiple phones articles everyday with the click of a button. And Drupal is for more experienced users and it is more bulky and has more advanced features. 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When you want to move a Drupal site from one hosting server to another you have to ensure that the site works the same way on the new server as it used to work on the old server. There is no real fool proof way of doing this other than to meticulously document all the custom aspects associated with setting up the site and verifying it on the new server. The following is a checklist of information you have to collect before you move your Drupal site from one server to another. Drupal Solution Checklist Migration
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on 22nd August 2012 / by Anoop John
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