Monthly Archive:: April 2015

Adding AHCI support to CentOS after it was already installed in IDE mode

Sometimes when you’re using a server, you’ll notice that the disk i/o is slower than it ought to be, or is using a lot more cpu than it should be during disk i/o. In some cases, this would be because the BIOS is configured to use your sata drives in legacy IDE mode instead of

Setting up Software RAID / MDADM status alert Emails for failed drives in Centos, Ubuntu, and Debian

Issues regarding software and hardware raid are no stranger to the IOFlood blog, with articles discussing the relative merits of each, articles discussing why raid is important (and so are backups), and so on. But RAID only provides protection against failed drives if you realize a drive has failed and replace it. Often times, a

Is Chicago the best place for your dedicated server hosting?

Chicago, the windy city. It’s location central to the population centers and transportation systems in North America have helped Chicago grow tremendously in a number of industries. Web hosting is no exception. offers dedicated servers in Phoeniz, AZ, but we recognize that other cities may be a better fit for some customers. Deciding where

How to set up source nat routing (SNAT) in iptables to load balance outbound connections across multiple IP addresses

In our earlier days, before IOFlood, some of us ran web based proxy services. These were popular at workplaces or schools for accessing websites that were blocked there, such as gmail and myspace (remember myspace?). One common problem that came up, was that with so many users each sharing one IP on one server, our

Why Host a Dedicated Server in New York City?

New York City has been a hub of commerce in the United States for hundreds of years. It’s no surprise that this location is a favorite for internet providers and hosting companies. But should you host a dedicated server in New York City? Here at, we host all of our dedicated servers in Phoenix,