IBM x3655 Service Guide - Page 81

DIMMs, microprocessor, installed, microprocessors - memory configuration

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Table 3. DIMM installation sequence (continued) DIMMs 1 microprocessor installed 8 DIMM connectors 1 through 8 10 Not applicable 12 Not applicable 14 Not applicable 16 Not applicable 2 microprocessors installed DIMM connectors 1 through 4 and 9 through 12 DIMM connectors 1 through 6 and 9 through 12 DIMM connectors 1 through 6 and 9 through 14 DIMM connectors 1 through 8 and 9 through 14 DIMM connectors 1 through 16 DIMM 16 DIMM 15 DIMM 14 DIMM 13 DIMM 12 DIMM 11 DIMM 10 DIMM 9 DIMM 8 DIMM 7 DIMM 6 DIMM 5 DIMM 4 DIMM 3 DIMM 2 DIMM 1 v If you install two processors in the server, at a minimum, you must install two DIMMs in Slots 1 and 2 and two DIMMs in slot 9 and 10. v The server supports online-spare memory. This feature disables a failed pair of DIMMS from the system configuration and activates an online-spare pair of DIMMs to replace the failed pair. Online-sparing is supported on a per processor basis. Each microprocessor requires that two or more pairs of DIMMs be installed to support online sparing. The DIMMs must be the same speed, type, size (or larger), and technology as the failed pair of DIMMs. Enable online-spare memory through the Configuration/Setup Utility program. The BIOS code assigns the online-spare memory DIMM pairs according to your DIMM configuration. Chapter 3. Removing and replacing server components 63

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Table
3.
DIMM
installation
sequence
(continued)
DIMMs
1
microprocessor
installed
2
microprocessors
installed
8
DIMM
connectors
1
through
8
DIMM
connectors
1
through
4
and
9
through
12
10
Not
applicable
DIMM
connectors
1
through
6
and
9
through
12
12
Not
applicable
DIMM
connectors
1
through
6
and
9
through
14
14
Not
applicable
DIMM
connectors
1
through
8
and
9
through
14
16
Not
applicable
DIMM
connectors
1
through
16
DIMM 16
DIMM 15
DIMM 14
DIMM 13
DIMM 12
DIMM 11
DIMM 10
DIMM 9
DIMM 8
DIMM 7
DIMM 6
DIMM 5
DIMM 4
DIMM 3
DIMM 2
DIMM 1
v
If
you
install
two
processors
in
the
server,
at
a
minimum,
you
must
install
two
DIMMs
in
Slots
1
and
2
and
two
DIMMs
in
slot
9
and
10.
v
The
server
supports
online-spare
memory.
This
feature
disables
a
failed
pair
of
DIMMS
from
the
system
configuration
and
activates
an
online-spare
pair
of
DIMMs
to
replace
the
failed
pair.
Online-sparing
is
supported
on
a
per
processor
basis.
Each
microprocessor
requires
that
two
or
more
pairs
of
DIMMs
be
installed
to
support
online
sparing.
The
DIMMs
must
be
the
same
speed,
type,
size
(or
larger),
and
technology
as
the
failed
pair
of
DIMMs.
Enable
online-spare
memory
through
the
Configuration/Setup
Utility
program.
The
BIOS
code
assigns
the
online-spare
memory
DIMM
pairs
according
to
your
DIMM
configuration.
Chapter
3.
Removing
and
replacing
server
components
63