Inside the IoSafe Solo
When you open the case you can plainly see what gives the hard drive its thermal resistance: there are two ceramic pieces fitted together around the hard drive. As you can see there is a fan positioned between the ceramic pieces as well to pull heat off of the hard drive.
As you can see in Figure 5 one of the ceramic pieces has air pathways molded into it to allow air to be pulled from the front of the case across the hard drive and ejected out the back.
In Figure 6, you can see how the hard drive is fit inside the ceramic shield and the water proof wrap that is around the hard drive. Where the cables enter the water shield you can see some black putty used to water proof this section. The hard drive is held in place with four foam rubber spacers that keep the drive from moving but also allow for some shock absorption.
In Figure 7 You can see the main controller used by the Solo, a JMicron JM20337.
As you can see in Figure 8 the hard drive used by this external case is the Hitachi Deskstar P7K500 (HDP725050GLA360).