The size of a deep freezer required to store half a cow depends on several factors, including the size of the cow, how it's butchered and packaged, and the type of deep freezer you have.
Typically, half a cow can weigh anywhere from 300 to 400 pounds (136 to 181 kg) or even more, depending on the breed and size of the animal. When the cow is butchered, the meat is divided into various cuts such as steaks, roasts, ground beef, etc. These cuts are then usually vacuum-sealed or tightly wrapped to prevent freezer burn and extend their shelf life.
For storage, a chest freezer is often preferred over an upright freezer as it can accommodate larger and irregularly shaped packages more efficiently. A chest freezer with a capacity of around 10 to 15 cubic feet should be sufficient to store half a cow. However, the actual size you need may vary depending on the specific amount of meat and how it's packaged.
It's always a good idea to measure the available space in your deep freezer or the one you plan to purchase and discuss the storage needs with the butcher to ensure you have enough room for half a cow. Additionally, some people prefer to split the meat with friends or family if they don't have enough space in their freezer.