IBM Storwize V7000, Введение и руководство по внедрению

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Chapter 2. Introduction to IBM Flex System V7000 Storage Node
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򐂰 Dynamic migration to help speed data migrations from weeks or months to days,
eliminating the cost of add-on migration tools and providing continuous availability of
applications by eliminating downtime.
򐂰 Non-disruptive volume moves across clustered systems. Data mobility has been
enhanced with greater flexibility for non-disruptive volume moves. IBM Flex System V7000
Storage Node provides the ability to move volumes non-disruptively between the dual
controllers within one enclosure. IBM Flex System V7000 Storage Node supports moving
volumes anywhere within a clustered system without disruption of host access to storage.
򐂰
Four way clustering of Flex System V7000 control enclosures. IBM Flex System V7000
Storage Node provides increased scalability and performance with four-way clustered
systems. Flex System V7000 supports clustered systems with up to four control
enclosures, essentially quadrupling the maximum capacity and performance of a single
IBM Flex System V7000 Storage Node.
IBM Storwize Family Software for Storwize V7000 for use with Storwize V7000 External
Expansion Enclosures includes the following features and capabilities:
򐂰 When Storwize V7000 Expansion Enclosures are used as external expansions enclosures
with the Flex System V7000 Control Enclosure, each IBM Storwize V7000 Disk Expansion
Enclosure (2076-212/224) must have the IBM Storwize Family Software for Storwize
V7000 license. A quantity of one IBM Storwize Family Software for Storwize V7000 license
is required for each Storwize V7000 Expansion Enclosure.
򐂰 Consider an IBM Flex System V7000 Storage Node configuration comprised of one Flex
System V7000 Control Enclosure, one Flex System V7000 Disk Expansion Enclosure,
and three Storwize V7000 expansion enclosures (2076-212/224). This configuration would
require three IBM Storwize Family Software for Storwize V7000 licenses, one for each
enclosure, and two IBM Storwize Family Software for Flex System V7000.
2.4.2 Optional licensing
IBM Flex System V7000 Storage Node optional licenses are described next.
External Virtualization
Each IBM Flex System V7000 Storage Node Disk Control Enclosure has the ability to attach
and manage external storage devices on the SAN in the same way as the SAN Volume
Controller. To authorize use of this function, you must license the IBM Flex System V7000
Storage Node External Virtualization Software. You will need to license the number of storage
enclosures attached externally to IBM Flex System V7000 Node. IBM Flex System V7000
Control Enclosures and IBM Flex System V7000 Expansion Enclosures which are clustered
do not need to be included in this External Virtualization license. However, any IBM Flex
System V7000 Control Enclosures or Expansion Enclosures which are SAN attached and
virtualized are included in this license.
A storage enclosure externally managed by IBM Flex System V7000 Storage Node is defined
as an independently powered, channel-attached device that stores data on magnetic disks or
SSDs, such as disk controllers and their respective expansion units, each constituting
separate enclosures. Therefore, an enclosure can be either the main controller housing disk
(or SSD) drives or the expansion chassis that house additional disk (or SSD) drives for the
purpose of expanding the total capacity of the storage system. If there exists any confusion
for an external storage enclosure that does not conform to this definition, consult your IBM
sales representative for an equivalent measure based on a disk drive count.