The IBM eServer BladeCenter JS20 - IBM Redbooks

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Hardware management subnet We recommend that you establish a dedicated hardware management subnet. The 10/100BaseT Ethernet interface on the Management Modules installed in each BladeCenter chassis provides the gateway to this subnet for each BladeCenter chassis. You need to install external LAN switches or hubs to interconnect the 10/100BaseT Ethernet interface on the Management Modules of each BladeCenter chassis with external management systems. You use this subnet to access the Management Module Web interface and command line interface (CLI). You also use this subnet to access the Web interface and CLI of I/O modules. System management applications such as IBM Director or IBM Cluster Systems Management (CSM) also use this subnet to communicate with the hardware management functions of the BladeCenter infrastructure. Restrict access to this subnet to those management systems, system administrators, and operators who have responsibility for managing the BladeCenter infrastructure. You need to allocate multiple IP addresses to each BladeCenter chassis on this subnet, including: ► One IP address for the external interface of the Management Module in each BladeCenter chassis ► One IP address for the internal interface of the Management Module in each BladeCenter chassis ► One IP address for the management interface of each I/O module in each BladeCenter chassis Note: Although the logical network view illustrated in Figure 4-1 shows the I/O Management Module interfaces connecting directly to the hardware management subnet, they are physically connected via the Management Module, which acts as gateway to those interfaces. The Management Module performs a proxy Address Resolution Protocol (ARP) function to make it appear as though the I/O module management interfaces are attached to the hardware management subnet. It is possible to use a different subnet for the Management Module internal network interface and I/O module management interfaces. However, we do not recommend this configuration. Learn how to configure these IP addresses in Chapter 5, “Hardware setup” on page 69. 56 The IBM Eserver BladeCenter JS20
Serial over LAN subnet The SoL remote text console function requires a subnet and underlying VLAN that is implemented by a LAN Switch I/O Module installed in I/O module bay 1 of the BladeCenter chassis (see Figure 2-2 on page 9). This subnet and VLAN is entirely internal to each BladeCenter chassis and should not be externally accessible. If you use the 4-Port Gigabit Ethernet Switch Module or the Nortel Networks Layer 2-7 Gigabit Ethernet Switch Module, the VLAN uses VLAN ID 4095. If you use the Cisco Systems Intelligent Gigabit Ethernet Switch Module, you can choose the VLAN ID. You need to assign a unique range of IP addresses to this subnet for use by the SoL remote text console function. Important: One IP address is required for each blade server. You need to specify only the starting IP address within the range of IP addresses that you assign into the Management Module. The Management Module then automatically assigns consecutive IP addresses from the starting address that you provide to each blade server that you have installed. You can learn how to configure the SoL subnet and VLAN in 5.5.1, “Configuring Serial over LAN” on page 89. Operating system management subnet We expect most environments that use the BladeCenter JS20 to rely on the network installation procedure to install the operating systems. We discuss this further in 4.2, “Operating system installation” on page 60. The operating system management subnet is used to support both the initial installation and subsequent management of the operating systems installed on BladeCenter JS20s. This subnet is implemented using a VLAN provided by the LAN Switch I/O Modules installed in I/O module bay 2 of each BladeCenter chassis. Alternatively you can implement it using a Pass-Thru I/O Module installed in I/O module bay 2 that is connected to an external LAN switch. You may want to install both AIX and Linux operating systems on different BladeCenter JS20s in the same environment. In this case, you may need to set up multiple operating system management subnets and underlying VLANs, one for blade servers running AIX and the other for blade servers running Linux. Chapter 4. Planning considerations 57
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The IBM Eserver BladeCenter JS20 Le
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Note: Before using this information
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Chapter 4. Planning considerations
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vi The IBM Eserver BladeCenter JS20
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6-8 Language selection . . . . . .
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x The IBM Eserver BladeCenter JS20
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Trademarks The following terms are
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worked actively with Linux adoption
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xvi The IBM Eserver BladeCenter JS2
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for e-commerce and On Demand Busine
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Page 26 and 27: 2.1 Overview of the BladeCenter inf
Page 28 and 29: Attention: Nonredundant power is no
Page 30 and 31: Attention: Power supply modules mus
Page 32 and 33: Figure 2-4 KVM Management Module Th
Page 34 and 35: 2.1.4 I/O modules You use the keybo
Page 36 and 37: Note: The IBM 4-Port Gb Ethernet Sw
Page 38 and 39: The Brocade Enterprise SAN Module c
Page 40 and 41: 2.2 BladeCenter JS20 The BladeCente
Page 42 and 43: 2.2.1 Base features There are two m
Page 44 and 45: You can learn more about the availa
Page 46 and 47: Expansion cards You can install any
Page 48 and 49: 2.3.1 Review of POWER and PowerPC A
Page 50 and 51: In 1993, IBM announced the POWER2 p
Page 52 and 53: These components all interact with
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Page 64 and 65: the bus interface is slightly lower
Page 66 and 67: 3.1 Operating system support 3.1.1
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Page 76 and 77: Application subnet The primary reas
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Page 88 and 89: 5.1 Management Module configuration
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Page 98 and 99: Figure 5-7 Viewing firmware levels
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Page 102 and 103: 5.4.3 BladeCenter JS20 firmware (BI
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Page 120 and 121: 6.1 Installing Linux Both Red Hat E
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3. In the next panel as shown in Fi
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To build your own zImage.initrd, fo
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6.2.1 BOOTP DHCP is an extension to
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6.3.1 Red Hat Kickstart Red Hat pro
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6.3.2 SuSE AutoYaST SLES provides a
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► System Set the general system i
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The syntax for mkzimage_cmdline is
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3. We select the install option and
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7.1 Minimal NIM installation Follow
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4. In the next window (Figure 7-4),
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3. In the Configure NIM Environment
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7.3 Adding machine information With
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3. In the next window (Figure 7-12)
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7.4 Preparing the NIM master With a
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1. On the first panel, select the d
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4. As illustrated in Figure 7-19, w
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8.1 IBM Director IBM Director is a
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8.1.1 Setting up an IBM Director Se
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8. Enter the database connection in
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2. With the sources copied to the h
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As CSM was being developed, the Ext
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This is the interface that will be
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version packaged with CSM. And you
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You can verify what user IDs you co
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► PowerMethod: Should always be b
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The csmsetupyast command uses an XM
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RHEL Red Hat Enterprise Linux RISC
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Online resources ► CSM for Linux:
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How to get IBM Redbooks Help from I
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eth0 62 eth1 62 F Fibre Channel Exp
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T translation lookaside buffer (TLB
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The IBM Eserver BladeCenter JS20 Le
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The IBM eServer BladeCenter JS20 - IBM Redbooks

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