File/folder limit and more on file name length

Invalid characters in file name: ” # % & * : < > ? \ / { | } ~ 

Invalid characters in folder name: ~ # % & * { } \ : < > ? / | “

Invalid characters in site name: \ / : * ? ” < > | # { } % & <TAB>” ~ + (also, site name can not start with _ and end with .)

File size limit recommendation:

“The default max single file upload size is 50 MB by default for a web application. Microsoft IT limits their environment at 100 MB, and the maximum that the product itself can handle or support is 2GB which is essentially a SQL limit. By setting the limit to blank will essentially support what SQL will support. It’s true that simply removing this, it doesn’t mean that a user can upload a 2GB file. The server time out settings, browser and network speed play a large part in what is truly supportable. The 50MB is the best experience.” Note: if you increase the file size limit, you also need to re-configure the server time out.

File size is configured in Central Admin->Application Management->Web Application General Settings.

Here is original article about all these data.

As far as the number of files, it’s said in a MS paper that 2000 or less is recommended for a single folder. There is a 5 million document limit per library.

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