Our Multi-DB plugin allows for massive scaling of your WordPress Multisite network to hundreds, even thousands of sites. It allows you to split your single database into 16, 256 or 4096 database – and if you are using cPanel, even incorporates a script that will do that for you.

Features:

• Friendlier error reporting
• More failover ready for sites with multiple servers / replication
• Fixed a few small bugs people have come across