IBM Flex System V7000 Expansion Enclosure 4939H29 ユーザーズマニュアル

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Chapter 4. IBM Flex System V7000 Storage Node Initial Configuration 
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Draft Document for Review January 29, 2013 12:52 pm
8068ch04-Initial Config.fm
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You should have a minimum of three IP addresses for initial system configuration. These 
IP addresses can be of either the IPv4 or IPv6 standards. One for management and two 
for service access to each of the control canisters.
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A minimum of one and up to four IP addresses are needed if iSCSI attached hosts access 
volumes from the IBM Flex System V7000 Storage Node. These are in addition to the 
three IP addresses needed for the management of the system.
4.1.2  SAN configuration planning
The SAN fabric is an area of the network that contains routers and switches. The IBM Flex 
System V7000 Storage Node has connections for up to eight 8Gbps fiber channel 
connections per control enclosure. A SAN is configured into a number of zones. A device 
using the SAN can communicate only with devices that are included in the same zones that it 
is in. A Flex System V7000 Storage Node can have several distinct types of zones: a system 
zone, host zones, and disk zones. The intersystem zone is optional. Some operating systems 
cannot tolerate other operating systems in the same host zone, although you might have 
more than one host type in the SAN fabric. For example, you can have a SAN that contains 
one host that runs on an IBM AIX operating system and another host that runs on a Microsoft 
Windows operating system.
After the IBM Flex System V7000 Storage Node, hosts, and optional external storage 
systems are connected to the SAN fabrics, zoning needs to be implemented. See Chapter 11, 
“SAN Connections and Configuration” on page 431
 for more information.
The recommended SAN configuration is composed of a minimum of two fabrics with all IBM 
Flex System V7000 Storage Node ports, host ports, and ports from external storage systems 
which are to be virtualized divided equally between the two fabrics for redundancy in the 
event one of the fabrics should go offline (either planned or unplanned).
Degraded performance can occur when you have a SAN configuration in which any single 
component might fail and connectivity between the devices within the SAN is maintained. 
Splitting the SAN into two independent counterpart SANs achieves this normally. Because of 
the requirement for high availability, IBM Flex System V7000 Storage Node generally is 
installed into a redundant SAN, however, a non-redundant SAN is supported. 
4.1.3  LAN configuration planning
The Enterprise Chassis provides the following services to the IBM Flex System V7000 
Storage Node:
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1 Gbps management network
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4 host attachment networks
– 10 Gbps Ethernet
– 8 Gbps or 16 Gbps Fibre Channel Service IP address
4.1.4  Management IP address considerations
The IBM Flex System V7000 Storage Node management IP address provides access to the 
system management interfaces, including the GUI and CLI. The management IP address is 
Note: All communication between the canisters in the same control enclosure is performed 
either through the SAN or via PCI Express (PCIe) link. All configuration and service 
commands are sent to the system through an Ethernet network.