Questions[maximum](server)

maximum size of uploads in php depend on number of settings. here they are, as put into apache virtual hosts file:

php_admin_flag file_uploads on

php_admin_value memory_limit 560M
php_admin_value post_max_size 530M
php_admin_value upload_max_filesize 500M

php_admin_value max_execution_time 0
php_admin_value max_input_time 0

please ignore the values above, but they enable me to allow uploads of around 150-200M. memory_limit, post_max_size and upload_max_filesize have some specific ratios between each other. i believe that

upload_max_filesize < post_max_size < memory_limit

however, i dont' know how to calculate exact sizes. for example what must be values of these settings in order to allow exactly 100M file upload? from what i gathered online, there is number of factors that determine these ratios, but i couldn't find any references what are these factors.

i'm using linux system.

It is known that ext2/ext3 FS have a rather low limit of about 32k files/directories per directory.

It looks like ReiserFS is limited in practice by the r5 hash function which allows about 1 200 000 file names without collisions.

But what about other common Linux File Systems? JFS, XFS, Btrfs, Reiser4, ext4,...

Thanks in advance!

Given I have plenty of disk space to work with, what are some technical considerations that I need to consider when configuring email attachment size limits?

What is the maximum number of user schemas one can create in a single SQL Server 2005 database?

Is this figure different on SQL Server Express vs SQL Server Standard?

I've searched the MSDN documentation but can't find anything approaching an answer. The max capacity page at MSDN doesn't mention schemas.

My problem is that my FTP work great, exept when i upload files on a particular client server!

on this server happen that some files are uploaded fine and others not, they stop while uploading at half of it's size, then this error is displayed:

530 Sorry, the maximum number of clients (4) from your host are already connected. Unable to make a connection. Please try again.

Obviously this is not true, i'm the only one that is uploading!

Anyone had the same experience with this!?

PS: i have tried many different FTP, all display the same error or just hung up!

Thank's