The best rugged shelving that I've used in the basement and garage is called "rivet lock" shelving. This type is quite sturdy, has adjustable shelves and can be easily disassembled and moved.
When you go to search out this type make sure to get genuine rivet lock shelving. There are cheaper shelves that try to imitate the rivet lock type but are flimsy and prone to bending and damage if trying to disassemble/reassemble.
Here are a few pictures of some rivet lock shelving in my garage showing some of its features. In this first picture see how I added 3/8" plywood sides to the shelf by bolting it onto the side rails.
This next picture you can see how the shelf units are placed side by side (and in my case bolted together) to make up a bigger storage area. In this case the shelves for a U shaped space for tool storage. I have even placed a "floor" over the top to permit storage of other items overhead below the ceiling. The bottom side of the "floor" has a pair of small florescent lights to light the area.
This picture shows a closeup of the rivets and how the cross members slide into the side rails.
You can get this shelving at various home DIY stores. Once again be aware that it will be varying grades at different price points. I always get the product that has two rivets on each cross member. It is much stronger and sturdier.
(The shelving you see in the pictures has been moved across the country and reassembled several times. Note that the particle board shelf inserts come with the shelf kits).
