2 Chapter 2. Terminology and technology In this chapter, we describe and explain the terminology that is used in this book. You need to understand the terminology completely. Remember that everything is explained from the SAN32B-E4 Encryption Switch, IBM SAN384/768, IBM Tivoli Key Lifecycle Manager (TKLM), and IBM Storwize V7000 points of view and might differ from the meanings with which you are familiar. Also, we explain several of the key technological and architectural aspects in detail. This chapter covers the following topics: