有关vlk、vol、oem 的版本意思
按照今年8月1日实行的volume licensing 101来看，我们通常只接触到3种可以直接全新安装的cd光盘。
original equipment manufacturer
you may license products through an original equipment manufacturer (oem). these products, such as windows operating systems, come installed when you purchase a new computer.
oem软件是给电脑生产厂的版本，无需多说。
full packaged product (fpp)–retail
physical, shrink-wrapped boxes of licensed product that can be purchased in a local retail store or any local software retailer.
volume licensing for organizations
you may enjoy potentially significant savings by acquiring multiple product licenses. depending on the size and type of your organization.
官方网站有一个表格，上面有一句话："different products require different volume licensing keys (vlks). refer to the table below to make sure you have the correct vlk for your microsoft product."，我想这就很好的说明了vlk指的是key而不是产品了。
