Installing Drupal

Disclaimer

I apologize if I'm putting this in the wrong place. I didn't see a forum specifically for servers, so I figure this is probably the best place.

Introduction

Our organization currently hosts quite a few Drupal sites. We are looking to make some changes to our server infrastructure with two goals in mind.

1. High Availability. IE:
   • Redundancy
   • Fault Tolerance
   • Limited Downtime
2. Load Balancing

To that end we have come up with a tentative plan. We would like some input in order to get an idea of whether this is a feasible plan. Will it accomplish our goals? Is it attainable? How difficult is it? What are some pitfalls that we might want to avoid. Any input from anyone who has experience with any of these systems/technologies is welcome, especially if you have used them in a Drupal setting. We're not necessarily looking for anyone to tell us how to do this. We have plans for that, but we do want to know if this is a feasible plan before we take the plunge and invest resources in it.

I'm trying to do a fresh install of D7. After entering in the database information and continuing, I either:

a) Go back to the very first step to select the installation profile; or
b) Have to re-enter the database information (no error message and definitely the right credentials); or
c) Go on to the next step to enter the site information, somtimes seeing "No branch selected" and after entering in the information I go to the beginning again, or back to the database.

I am trying to install Drupal 7 on my windows 7 PC but I am seeing errors on the requirements page. The problem is with gd library and PDO drivers. I checked my php.ini file and I see gd2 enabled, pdo driver enabled, php_pdo_mysql enabled and the ext folder does have the respective dlls. I don't know what the problem is and I am not able to proceed.
I have apache 2.2, php 5.3.6 and Mysql installed in my pc. I did make all the changes to the php.ini files such as uncommenting the required extensions but still I am unable to install drupal.

I have no clue what's going on with my drupal site. I created a while ago on my school's server and I'm just now getting around to bringing it over to GoDaddy's shared hosting servers.

The site is evergreenlogcabin.com. And when I try to run "evergreenlogcabin.com/update.php" I get "http://www.evergreenlogcabin.com/evergreenlogcabin.com/update.php?op=info"

And pretty much anything I do while result in a duplicate URL. Do you know why this is and how I can fix this?

I use SQLite for D7.x. . . . Does It mean I don't use / no need MySQL ???. . . . what the consequences ??

Hi,
I'm coming to install drupal on centos 5.5
I installev cia fantastico
and get the error message
"Fatal error: Class 'PDO' not found in /home/stu/public_html/drupal/includes/database/database.inc on line 185"

so visiting install.php i get