IBM Storwize V7000, Introduction And Implementation Manual

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Chapter 2. Introduction to IBM Flex System V7000 Storage Node
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Figure 2-1 shows a representation of the IBM virtual storage environment.
Figure 2-1 IBM virtual storage environment
2.2 IBM Flex System V7000 Storage Node terminology
IBM Flex System V7000 Storage Node introduces some new terminology, which is defined in
Table 2-1. We also include the terms first introduced with the IBM SVC and the IBM Storwize
V7000, which are important in order to understand the rest of the implementation procedures
described in this publication.
Table 2-1 IBM Flex System V7000 Storage Node terminology
IBM Flex System
V7000 Storage
Node term
Definition
Chain The SAS2 connections by which expansion enclosures are attached which
provides redundant access to the drives that are inside the enclosures. Each
IBM Flex System V7000 Storage Node control canister has one chain
connection.
Clone A copy of a volume on a server at a particular point in time. The contents of
the copy can be customized while the contents of the original volume are
preserved.
Control canister A hardware unit that includes all the management and control hardware,
fabric and service interfaces, and the SAS2 expansion port.
Control enclosure A hardware unit chassis that inserts into the IBM Flex System that includes
control canisters including backup batteries, and 24 drive slots. It is the initial
building block for IBM Flex System V7000 Storage Node.
Event An occurrence that is significant to a task or system. Events can include
completion or failure of an operation, a user action, or the change in the state
of a process.