Fastnext offer a Clustered Shared Hosting Plan for customers with sites that may have high demands.

The available plan offers 30GB of Mirrored Storage Space, 600GB of Monthly Transfer, Hosting of up to 30 Domains and Unlimited of the following:
Parked Domains
Subdomains
MySQL Databases, with PostgreSQL Upon Request
FTP Accounts

cPanel is included with Fantastico too, Nightly Backups, 24/7 Tech Support and Live Chat Support.

Ecommerce and Stats Features include - osCommerce, Zen Cart, CubeCart and Agora Shopping Cart, also you can find Awstats, Webalizer, Raw Access Logs and Raw Log Manager.

Script language support for PHP 4 & 5, Ruby-on-Rails, CGI-BIN, PERL and Python is in place.

Setup is free and the Clustered Shared Hosting Plan is available at $9.95 per month with a 30 Day Money Back Guarantee.

You can also purchase the following additional services if needed:

Domain Registration - $9.95 per year.
Additional Storage Space - $3.95 per month per 1000MB.
Private SSL Certificate - $99.95 per year.
Dedicated IP -$2.00 per month.
Private DNS (Extra IP) - $2.00 per month.

See all of the features available with this Clustered Shared Hosting Plan at Fastnext Clustered Hosting