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82 IBM Power 570 Technical Overview and Introduction
network services and IP addresses. Figure 3-2 shows an overview of a Virtual I/O Server
configuration.
Figure 3-2 Architectural view of the Virtual I/O Server
Because the Virtual I/O server is an operating system-based appliance server, redundancy
for physical devices attached to the Virtual I/O Server can be provided by using capabilities
such as Multipath I/O and IEEE 802.3ad Link Aggregation.
Installation of the Virtual I/O Server partition is performed from a special system backup DVD
that is provided to clients that order any PowerVM edition. This dedicated software is only for
the Virtual I/O Server (and IVM in case it is used) and is only supported in special Virtual I/O
Server partitions. Two major functions are provided with the Virtual I/O Server: a Shared
Ethernet Adapter and Virtual SCSI.
Shared Ethernet Adapter
A Shared Ethernet Adapter (SEA) can be used to connect a physical Ethernet network to a
virtual Ethernet network. The Shared Ethernet Adapter provides this access by connecting
the internal Hypervisor VLANs with the VLANs on the external switches. Because the Shared
Ethernet Adapter processes packets at layer 2, the original MAC address and VLAN tags of
the packet are visible to other systems on the physical network. IEEE 802.1 VLAN tagging is
supported.
The Shared Ethernet Adapter also provides the ability for several client partitions to share one
physical adapter. Using an SEA, you can connect internal and external VLANs using a
physical adapter. The Shared Ethernet Adapter service can only be hosted in the Virtual I/O
Server, not in a general purpose AIX or Linux partition, and acts as a layer-2 network bridge
to securely transport network traffic between virtual Ethernet networks (internal) and one or
more (EtherChannel) physical network adapters (external). These virtual Ethernet network
adapters are defined by the POWER Hypervisor on the Virtual I/O Server
Figure 3-3 on page 83 shows a configuration example of an SEA with one physical and two
virtual Ethernet adapters. An SEA can include up to 16 virtual Ethernet adapters on the
Virtual I/O Server that share the same physical access.
Tip: A Linux partition can provide bridging function as well, by using the brctl command.
virtual SCSI
adapter
physical
Ethernet adapter
Shared Ethernet
Adapter
Virtual I/O Server
Virtual I/O client 1
external network
Hypervisor
Virtual I/O client 2
physical disk
adapter
physical disk
virtual Ethernet
adapter
physical disk
virtual Ethernet
adapter
virtual SCSI
adapter
virtual SCSI
adapter
virtual Ethernet
adapter
- Redpaper 1
- October 2008 3
- First Edition (October 2008) 4
- Contents 5
- Contents v 7
- Trademarks 10
- Become a published author 12
- Comments welcome 13
- General description 15
- 1.1 System specifications 17
- 1.2 Physical package 17
- 1.3 System features 18
- 1.3.2 Memory features 20
- 1.3.4 I/O drawers 22
- Front Rear 24
- 1.4 System racks 26
- Physical specifications 28
- Client responsibilities 28
- 1.4.5 Rack-mounting rules 31
- 1.4.6 Useful rack additions 32
- 1.4.7 OEM rack 33
- Architecture and technical 37
- 2.1 The POWER6 processor 38
- Figure 2-2 POWER6 processor 39
- 2.1.1 Decimal floating point 40
- 2.3 Processor cards 43
- 2.3.2 Processor clock rate 44
- 2.4 Memory subsystem 45
- 2.4.4 OEM memory 48
- 2.5 System buses 49
- 2.5.2 Service processor bus 50
- 2.6 Internal I/O subsystem 51
- 2.6.1 System ports 52
- POWER6 chip 56
- 2.8 PCI adapters 57
- 2.8.1 LAN adapters 58
- 2.8.2 SCSI and SAS adapters 58
- 2.8.3 iSCSI 59
- IBM iSCSI adapters 60
- 2.8.4 Fibre Channel adapter 61
- 2.8.5 Graphic accelerators 61
- 2.9 Internal storage 62
- 2.9.2 Split backplane 63
- 2.9.3 Internal media devices 63
- 2.10 External I/O subsystems 64
- 7311 Model D11 features 65
- PCI-X Bridge 66
- PCI-X slots 67
- SPCN cabling examples 68
- YO Cable 71
- IBM AIX 5L 77
- IBM AIX V6.1 77
- Linux for System p systems 78
- 2.13 Service information 79
- 2.14 System firmware 81
- System firmware download site 82
- 2.14.1 Service processor 84
- System Management Services 86
- Open Firmware 87
- Virtualization 89
- 3.1 POWER Hypervisor 90
- Virtual SCSI 91
- Virtual Ethernet 91
- Virtual (TTY) console 91
- 3.2 Logical partitioning 92
- 3.2.3 Processing mode 93
- Dedicated mode 94
- Shared dedicated mode 94
- Shared mode 94
- 3.3 PowerVM 95
- Shared Ethernet Adapter 96
- Chapter 3. Virtualization 83 97
- 3.3.3 PowerVM Lx86 99
- Supported Operating Systems 100
- Chapter 3. Virtualization 87 101
- Chapter 3. Virtualization 89 103
- 3.4 System Planning Tool 105
- Continuous availability and 107
- Component failure rates 108
- 4.2 Availability 109
- Persistent deallocation 110
- Memory protection 113
- Memory page deallocation 114
- Memory control hierarchy 114
- Memory deconfiguration 115
- L2 Array Protection 116
- 4.2.4 PCI Error Recovery 117
- 4.3 Serviceability 118
- 4.3.1 Detecting errors 119
- Error checkers 120
- Fault Isolation Registers 120
- 4.3.2 Diagnosing problems 121
- Boot-time 122
- Device drivers 122
- 4.3.3 Reporting problems 123
- Extended Error Data (EED) 124
- System dump handling 124
- Customer notify 124
- Call home 124
- Guiding light LEDs 125
- The operator panel 125
- Concurrent maintenance 126
- Blind-swap PCI adapters 126
- Firmware updates 126
- Repair and verify 127
- 4.5 Manageability 130
- Graphics terminal 134
- Example 4-1 135
- 4.6 Cluster solution 136
- Related publications 139
- Online resources 140
- How to get Redbooks 140
- Help from IBM 140
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