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Dell PowerEdge 2970 Hardware Owner's Manual - Page 93

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When enabled, memory sparing allocates and reserves ranks of memory from the installed DIMMs to act as spare memory in the event of a memory channel failure. A memory channel uses paired DIMMs; for memory sparing to work, DIMMs must be paired as spares also. Memory sparing allocates only the first rank of memory of a DIMM. For a single-rank DIMM, the entire capacity of the DIMM must be allocated for sparing along with the adjacent single-rank DIMM to spare a memory channel. For dual-rank DIMMs, two DIMMs are also required for sparing, but as only the first rank of each DIMM is allocated, only half of a dual-rank DIMM's capacity is allocated for sparing. The second ranks on both DIMMs are available memory. Memory sparing calculates the appropriate DIMMs to spare by searching the DIMM sockets, starting with the higher-numbered socket pair (specifically, sockets 3 and 4 or sockets 7 and 8), for an amount of memory large enough to spare one of the available channels of memory. If the DIMMs in these sockets are sufficient to spare a channel of the available memory, the first rank of each of those two DIMMs are spared. If the amount of memory is not large enough to spare an available memory channel, the system spares the DIMM ranks in the lower-numbered sockets. Table 3-2 shows how memory sparing works in various memory configurations. Table 3-2. Memory Sparing in Single- and Dual-Processor Configurations Processor 1 Processor 2 Available Memory Spared Memory DIMM 1 DIMM 2 DIMM 3 DIMM 4 DIMM 5 DIMM 6 DIMM 7 DIMM8 1 CPU / 2 CPUs 1 CPU / 2 CPUs 512 MB 512 MB 512 MB 512 MB 512 MB 512 MB 512 MB 512 MB 1 GB / 2 GB 1 GB / 2 GB 1 GB 1 GB 512 MB 512 MB 1 GB 1 GB 512 MB 512 MB 1 GB / 2 GB 2 GB / 4 GB 1 GB 1 GB 1 GB 1 GB 1 GB 1 GB 1 GB 1 GB 2 GB / 4 GB 2 GB / 4 GB 2 GB 2 GB 512 MB 512 MB 2 GB 2 GB 512 MB 512 MB 3 GB / 6 GB 2 GB / 4 GB 2 GB 2 GB 1 GB 1 GB 2 GB 2 GB 1 GB 1 GB 4 GB / 8 GB 2 GB / 4 GB 2 GB 2 GB 2 GB 2 GB 2 GB 2 GB 2 GB 2 GB 6 GB / 12 GB 2 GB / 4 GB 4 GB 4 GB 512 MB 512 MB 4 GB 4 GB 512 MB 512 MB 5 GB / 10 GB 4 GB / 8 GB 4 GB 4 GB 1 GB 1 GB 4 GB 4 GB 1 GB 1 GB 6 GB / 12 GB 4 GB / 8 GB 4 GB 4 GB 2 GB 2 GB 4 GB 4 GB 2 GB 2 GB 8 GB / 16 GB 4 GB / 8 GB 4 GB 4 GB 8 GB* 8 GB 4 GB 1 GB 4 GB 1 GB 4 GB 8 GB 4 GB 8 GB 4 GB 1 GB 4 GB 1 GB 12 GB / 24 GB 4 GB / 8 GB 10 GB / 20 GB 8 GB / 16 GB 8 GB 8 GB 2 GB 2 GB 8 GB 8 GB 2 GB 2 GB 12 GB / 24 GB 8 GB / 16 GB 8 GB 8 GB 4 GB 4 GB 8 GB 8 GB 4 GB 4 GB 16 GB / 32 GB 8 GB / 16 GB 8 GB 8 GB 8 GB 8 GB 8 GB 8 GB 8 GB 8 GB 24 GB / 48 GB 8 GB / 16 GB Indicates a spared single-rank DIMM (512-MB or 1-GB). The entire capacity of this DIMM is reserved for sparing. Indicates a spared dual-rank DIMM (2-GB and higher). One-half of this DIMM's capacity is reserved for sparing. * When available. Installing System Components 93

Section	Page
Hardware Owner’s Manual	1
Contents	3
About Your System	11
Other Information You May Need	11
Accessing System Features During Startup	12
Front-Panel Features and Indicators	13
Hard-Drive Indicator Codes	15
Back-Panel Features and Indicators	17
Connecting External Devices	17
Power Indicator Codes	18
NIC Indicator Codes	19
LCD Status Messages	20
Solving Problems Described by LCD Status Messages	27
Removing LCD Status Messages	28
System Messages	28
Warning Messages	35
Diagnostics Messages	35
Alert Messages	36
Using the System Setup Program	37
Entering the System Setup Program	37
Responding to Error Messages	37
Using the System Setup Program	38
System Setup Options	38
Main Screen	38
Memory Information Screen	41
CPU Information Screen	41
Integrated Devices Screen	42
Serial Communication Screen	43
System Security Screen	44
Exit Screen	45
System and Setup Password Features	45
Using the System Password	46
Using the Setup Password	48
Disabling a Forgotten Password	49
Baseboard Management Controller Configuration	49
Entering the BMC Setup Module	49
BMC Setup Module Options	49
Installing System Components	51
Recommended Tools	51
Inside the System	52
Front Bezel	53
Removing the Front Bezel	54
Replacing the Front Bezel	55
Opening and Closing the System	55
Opening the System	55
Closing the System	56
Hard Drives	56
Removing a Drive Blank	57
Installing a Drive Blank	57
Removing a Hot-Plug Hard Drive	57
Installing a Hot-Plug Hard Drive	58
Replacing a Hard-Drive Carrier	59
Removing a Hard Drive From a Hard-Drive Carrier	59
Installing a Hard Drive Into a Drive Carrier	59
Power Supplies	60
Removing a Power Supply	61
Replacing a Power Supply	62
Removing the Power Supply Blank	62
Installing the Power Supply Blank	63
System Fans	63
Removing a System Fan	63
Replacing a Cooling Fan	64
SAS Controller Daughter Card	65
Installing a SAS Controller Daughter Card	65
Removing a SAS Controller Daughter Card	68
RAID Battery	69
Installing a RAID Battery	69
Removing a RAID Battery	70
Configuring the Boot Device	70
Internal USB Memory Key Connector	70
Installing the Optional Internal USB Memory Key	70
Expansion Cards	72
Expansion Card Installation Guidelines	72
Installing an Expansion Card	72
Removing an Expansion Card	74
Cooling Shroud	74
Removing the Cooling Shroud	74
Installing the Cooling Shroud	75
Fan Bracket	76
Removing the Fan Bracket	76
Replacing the Fan Bracket	77
Expansion-Card Cage	77
Removing the Expansion-Card Cage	77
Replacing the Expansion-Card Cage	79
RAC Card	79
Removing the RAC Card	79
Installing a RAC Card	81
Optical Drive	81
Removing the Optical Drive from the System	82
Installing the Optical Drive	83
Removing the Optical Drive From the Optical Drive Tray	83
Installing an Optical Drive Into the Optical Drive Tray	84
Diskette Drive	84
Removing the Diskette Drive From the System	84
Installing the Diskette Drive Into the System	85
Removing the Diskette Drive From the Drive Carrier	86
Installing the Diskette Drive Into the Drive Carrier	87
Tape Drive	87
Removing and Installing an Internal Tape Drive	87
Removing and Replacing the Tape Drive Cable Retention Bracket	89
System Memory	91
General Memory Module Installation Guidelines	91
Memory Sparing Support	92
Installing Memory Modules	94
Removing Memory Modules	95
Integrated NIC TOE	96
Processors	96
Removing a Processor	96
Installing a Processor	98
System Battery	100
Replacing the System Battery	100
Expansion-Card Riser Boards	102
Removing the Left Expansion-Card Riser Board	102
Installing the Left Riser Board	103
Removing the Center Riser Board	104
Installing the Center Riser Board	104
Sideplane Board	105
Removing the Sideplane Board	105
Installing the Sideplane Board	107
SAS/SATA Backplane Board	107
Removing the SAS/SATA Backplane Board	107
Installing the SAS/SATA Backplane Board	108
Control Panel Assembly (Service-only Procedure)	109
Removing the Control Panel Assembly	109
Installing the Control Panel Assembly	110
System Board (Service-only Procedure)	111
Removing the System Board	111
Installing the System Board	112
Troubleshooting Your System	115
Safety First-For You and Your System	115
Start-Up Routine	115
Checking the Equipment	116
Troubleshooting IRQ Assignment Conflicts	116
Troubleshooting External Connections	116
Troubleshooting the Video Subsystem	117
Troubleshooting the Keyboard	117
Troubleshooting the Mouse	118
Troubleshooting Basic I/O Functions	118
Troubleshooting a Serial I/O Device	119
Troubleshooting a USB Device	119
Troubleshooting a NIC	120
Troubleshooting a Wet System	120
Troubleshooting a Damaged System	121
Troubleshooting the System Battery	122
Troubleshooting Power Supplies	122
Troubleshooting System Cooling Problems	123
Troubleshooting a Fan	124
Troubleshooting System Memory	124
Troubleshooting a Diskette Drive	126
Troubleshooting an Optical Drive	127
Troubleshooting a Tape Drive	128
Troubleshooting a Hard Drive	129
Troubleshooting a SAS or SAS RAID Controller Daughter Card	130
Troubleshooting Expansion Cards	132
Troubleshooting the Microprocessors	133
Running the System Diagnostics	135
Using Server Administrator Diagnostics	135
System Diagnostics Features	135
When to Use the System Diagnostics	135
Running the System Diagnostics	136
System Diagnostics Testing Options	136
Using the Custom Test Options	136
Selecting Devices for Testing	136
Selecting Diagnostics Options	137
Viewing Information and Results	137
Jumpers and Connectors	139
System Board Jumpers	139
System Board Connectors	141
SAS/SATA Backplane Board Connectors	143
Sideplane Board Connectors	144
Expansion-Card Riser-Board Components and PCIe Buses	144
Disabling a Forgotten Password	145
Getting Help	147
Technical Assistance	147
Online Services	147
AutoTech Service	148
Automated Order-Status Service	148
Technical Support Service	148
Dell Enterprise Training and Certification	149
Problems With Your Order	149
Product Information	149
Returning Items for Warranty Repair or Credit	149
Before You Call	150
Contacting Dell	152
Glossary	175

Match case Limit results 1 per page

Installing System Components

When enabled, memory sparing allocates and reserves ranks of memory from the installed DIMMs to act

as spare memory in the event of a memory channel failure. A memory channel uses paired DIMMs; for

memory sparing to work, DIMMs must be paired as spares also.

Memory sparing allocates only the first rank of memory of a DIMM. For a single-rank DIMM, the entire

capacity of the DIMM must be allocated for sparing along with the adjacent single-rank DIMM to spare

a memory channel. For dual-rank DIMMs, two DIMMs are also required for sparing, but as only the first

rank of each DIMM is allocated, only half of a dual-rank DIMM’s capacity is allocated for sparing. The

second ranks on both DIMMs are available memory.

Memory sparing calculates the appropriate DIMMs to spare by searching the DIMM sockets, starting

with the higher-numbered socket pair (specifically, sockets 3 and 4 or sockets 7 and 8), for an amount of

memory large enough to spare one of the available channels of memory. If the DIMMs in these sockets

are sufficient to spare a channel of the available memory, the first rank of each of those two DIMMs are

spared. If the amount of memory is not large enough to spare an available memory channel, the system

spares the DIMM ranks in the lower-numbered sockets. Table 3-2 shows how memory sparing works in

various memory configurations.

Table 3-2.

Memory Sparing in Single- and Dual-Processor Configurations

Processor 1

Processor 2

Available

Memory

Spared

Memory

DIMM 1

DIMM 2

DIMM 3

DIMM 4

DIMM 5

DIMM 6

DIMM 7

DIMM8

1 CPU / 2 CPUs

512 MB

1 GB / 2 GB

1 GB

512 MB

1 GB

512 MB

1 GB / 2 GB

2 GB / 4 GB

1 GB

2 GB / 4 GB

2 GB

512 MB

2 GB

512 MB

3 GB / 6 GB

2 GB / 4 GB

2 GB

1 GB

2 GB

1 GB

4 GB / 8 GB

2 GB / 4 GB

2 GB

6 GB / 12 GB

2 GB / 4 GB

4 GB

512 MB

4 GB

512 MB

5 GB / 10 GB

4 GB / 8 GB

4 GB

1 GB

4 GB

1 GB

6 GB / 12 GB

4 GB / 8 GB

4 GB

2 GB

4 GB

2 GB

8 GB / 16 GB

4 GB / 8 GB

4 GB

12 GB / 24 GB

4 GB / 8 GB

8 GB

1 GB

8 GB

1 GB

10 GB / 20 GB

8 GB / 16 GB

8 GB

2 GB

8 GB

2 GB

12 GB / 24 GB

8 GB / 16 GB

8 GB

4 GB

8 GB

4 GB

16 GB / 32 GB

8 GB / 16 GB

8 GB

24 GB / 48 GB

8 GB / 16 GB

Indicates a spared single-rank DIMM (512-MB or 1-GB). The entire capacity of this DIMM is reserved for sparing.

Indicates a spared dual-rank DIMM (2-GB and higher). One-half of this DIMM’s capacity is reserved for sparing.

When available.