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28 IBM Power 570 Technical Overview and Introduction
power in the data center. The margined power is the amount of extra
power that is allocated to a server during its installation in a
datacenter. It’s based on the server environmental specifications that
usually are never reached. Since server specifications are always
based on maximum configurations and worst case scenarios.
Processor Core Nap The IBM POWER6 processor uses a low-power mode called Nap
that stops processor execution when there is no work to do on that
processor core, both threads are idle. Nap mode allows the hardware
to clock off most of the circuits inside the processor core. Reducing
active power consumption by turning off the clocks allows the
temperature to fall, which further reduces leakage (static) power of
the circuits causing a cumulative effect. Unlicensed cores are kept in
core Nap until they are licensed and return to core Nap whenever
they are unlicensed again.
EnergyScale for I/O IBM POWER6 processor-based systems automatically power off
pluggable, PCI adapter slots that are empty or not being used to save
approximately 14 watts per slot. System firmware automatically
scans all pluggable PCI slots at regular intervals looking for ones that
meet the criteria for being not in use and powers them off. This
support is available for all POWER6 processor-based servers, and
the expansion units that they support. Note that it applies to hot
pluggable PCI slots only.
2.2.1 Hardware and software requirements
This sections summarizes the supported systems and software user interfaces for
EnergyScale functions.
Table 2-1 EnergyScale systems support
The primary user interface for EnergyScale features on a POWER6 based system is IBM
Systems Director Active Energy Manager™ running within IBM Director
Table 2-2 on page 29 shows the ASMI, HMC and Active Energy Manager interface support.
Power
trending
Power saver
mode
Power
capping
Processor
Nap
I/O
7998-61XYYYYN
8203-E4AYYYYY
8204-E8AYYYYY
9117-MMA (<
4.20 GHz)
Y - via iPDU
a
a. An iPDU is required for this support. The feature code 5889 is for a base iPDU in a rack while
the feature code 7109 is for additional iPDUs for the same rack. Supported racks are 7014-B42,
7014-S25, 7014-T00 and 7014-T42.
NNYY
9117-MMA
(>= 4.2 GHz)
Y - via iPDU
a
Y
b
b. Only supported if GX Dual Port RIO-2 Attach (FC 1800) is not present.
NYY
- 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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