Pros
As a company, ZT competes directly against the Hyperscaling Server and Storage solutions, so they go directly against EMC (Dell), HP, and Lenovo. The difference is the level of customization for the customer base to provide more a solution that will help the customer's demand vs trying to force a generic form-factor into an environment which can lead to either overkill due to sales folks who oversold a solution, or a customer who tried to save money and underscaled what they would need. The people at ZT are all eager to grow the company and has tremendous passion.
Cons
Because the company is growing so quickly, they are forced to mature in every department overnight, thus the tremendous opportunities to improve the company. Some may see this as a scary challenge but if you have good experience and insight into how an organization should look, this is definitely a great company for you.