To gain access to the inside of the Survivor you first have to remove the top and bottom corner covers. To pull them off there are two screws that hold it on that need to be removed. One on each side of the case. With the corners off the side panels can be removed and access to the PSU dust filter is now possible.
With the corner off you can also now pull the filter out the back of the case. I would rather be able to pull the filter without having to remove the corner piece, such as out the front where there is nothing in the way.
Looking at the inside of the Survivor there looks to be tons of room. In this configuration the Survivor can accommodate video cards up to 293mm long.
By removing the center hard drive cage that distance increases to 423mm, but at a loss of 3 drive trays.
In stock configuration there are 7 hard drive trays.
Each drive tray can hold either 2.5 or 3.5 hard drives.
The Survivor also includes a 5.25″ to dual 2.5″ drive bay adapter that can be used in the very top 5.25″ bay.
The Survivor has three external 5.25″ drive bays and one internal. The internal is at the very top behind the Phoenix logo on the front of the case.