IBM 8840 Hardware Maintenance Manual - Page 51

Active, connectors, Online-spare, memory

Get IBM 8840 - eServer xSeries 346 PDF manuals and user guides
UPC - 000435863799
View all IBM 8840 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 51 highlights

Table 5. Online-spare memory DIMM connector assignments (continued) Active DIMM connectors Online-spare memory DIMM connectors 1 and 2 3 and 4 5 and 6 1 and 2 3 and 4 5 and 6 7 and 8 v You can enable either online-spare memory or memory mirroring, but not both at the same time. v When you install or remove DIMMs, the server configuration information changes. When you restart the server, the system displays a message indicating that the memory configuration has changed. The following illustration shows how to install DIMMs on the system board. Complete the following steps to install a DIMM: 1. Read the "Installation guidelines" on page 23.and the safety information beginning on page Appendix B, "Safety information," on page 117. 2. Turn off the server and disconnect all power cords and external cables (see "Turning off the server" on page 7); then, remove the server cover (see "Removing the cover" on page 28). 3. Remove the air baffle (see "Removing the air baffle" on page 29). 4. Locate the DIMM connectors on the system board and determine the connectors into which you will install the DIMMs. 5. Touch the static-protective package that contains the DIMM to any unpainted metal surface on the server. Then, remove the DIMM from the package. 6. Complete the following steps to install the DIMM. Repeat these steps for each DIMM that you install. a. Turn the DIMM so that the DIMM keys align correctly with the connector on the system board. Chapter 4. Installing options 41

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
Table
5.
Online-spare
memory
DIMM
connector
assignments
(continued)
Active
DIMM
connectors
Online-spare
memory
DIMM
connectors
1
and
2
3
and
4
5
and
6
1
and
2
3
and
4
5
and
6
7
and
8
v
You
can
enable
either
online-spare
memory
or
memory
mirroring,
but
not
both
at
the
same
time.
v
When
you
install
or
remove
DIMMs,
the
server
configuration
information
changes.
When
you
restart
the
server,
the
system
displays
a
message
indicating
that
the
memory
configuration
has
changed.
The
following
illustration
shows
how
to
install
DIMMs
on
the
system
board.
Complete
the
following
steps
to
install
a
DIMM:
1.
Read
the
“Installation
guidelines”
on
page
23.and
the
safety
information
beginning
on
page
Appendix
B,
“Safety
information,”
on
page
117.
2.
Turn
off
the
server
and
disconnect
all
power
cords
and
external
cables
(see
“Turning
off
the
server”
on
page
7);
then,
remove
the
server
cover
(see
“Removing
the
cover”
on
page
28).
3.
Remove
the
air
baffle
(see
“Removing
the
air
baffle”
on
page
29).
4.
Locate
the
DIMM
connectors
on
the
system
board
and
determine
the
connectors
into
which
you
will
install
the
DIMMs.
5.
Touch
the
static-protective
package
that
contains
the
DIMM
to
any
unpainted
metal
surface
on
the
server.
Then,
remove
the
DIMM
from
the
package.
6.
Complete
the
following
steps
to
install
the
DIMM.
Repeat
these
steps
for
each
DIMM
that
you
install.
a.
Turn
the
DIMM
so
that
the
DIMM
keys
align
correctly
with
the
connector
on
the
system
board.
Chapter
4.
Installing
options
41