So this is something that I should have memorized by now, but always find myself searching Google whenever I need it. MediaTemple’s Grid Servers have a built in 2mb limit on file uploads, which is small when you’re trying to upload photos from new multi-megapixel cameras, or even just large PDFs. The solution is to drop the following code into the .htaccess file in the root directory:
php_value upload_max_filesize 20M php_value post_max_size 20M
This next bit usually helps if the uploads are timing out.
php_value max_execution_time 200 php_value max_input_time 200
This usually does the trick!