In these trying times many companies are looking for ways to reduce spending and letting a battery that sits in a closet may seem like a well calculated risk, until disaster strikes.
At this time we are not prepared to comment on the overall performance of the new 5Z Family of products, since we have not completed testing. The 5-Series products from Adaptec that the 5Z controllers are based on are class leading products and I don't see Adaptec compromising their products speed.
Based on the information received from Adaptec, pre-sales of controllers are already underway and retail products should be available in July. Look for a full review to hit the pages of TweakTown in early August; at that point we will be able to examine the new product and run our tests and report the findings back to you.