Dell PowerEdge T20 User Manual
Remedial Action
to lose data)
Embedded
UO1
96K bytes non-volatile
No
N/A
System BIOS
SPI_1, SPI_3
Non-volatile memory, 64M
No
N/A
TPM
UF2
4K bytes non-volatile memory
No
N/A
System
Connectors :
Volatile memory in OFF state
1GB to 8GB.
Yes
Power off system.
System
On memory
Non-volatile EEPROM
system memory.
No
N/A
RTC CMOS
BATTERY
Volatile battery back-backed
Stores CMOS information.
No
Removing the on
Cell battery.
Video memory
UMA
Volatile memory in off state.
No
Enter S3-S5
Statement of Volatility – Dell PowerEdge
T20
CAUTION: A CAUTION indicates either potential damage
problem.
The Dell PowerEdge T20 contains both volatile and
immediately
even
after power is
soldered to the motherboard) are not included in the Statement of Volatility. Configuration option information (pertinent to options
such as microprocessors, remote access controllers, and storage controll ers) is av aila ble b y component separa tely .
following
Table 1. List of Non-Volatile Components on System Board
Description
Flash memory
in embedded
controller
after power is
NV
components
removed
removed
from the
are present on the Dell PowerEdge T20 server.
Reference
Designator
from the
component.
component. Non-volatile
Volatility Description
memory.
2K bytes non-volatile memory for
keyboard controller.
SMSC5555
bits (8MB), 32Mbits (4MB)
System BIOS and Video
BIOS for basic boot operation,
PSA (on board diags.)
to
hardware
non-volatile
Components chosen as user-definable configuration options (those not
or
loss
of
data and tells you how
(NV)
components. Volatile components
(NV)
components continue
User Accessible
for external data
to
avoid
the
to retain their data
(action necessary
lose their
The
data
Memory –
DDR3 DIMM
memory
memory SPD
EEPROM
2013 - 07
DIMM1,
DIMM2,
DIMM3,
DIMM4
DIMM(s) –
one, two,
three, or four
present
architectureuses system
DDR3.
located in the TPM module.
(see state definitions later in
text)
One to four modules will be
populated. System memory
size will depend on DIMM
modules and will be between
memory. 2K bits (256 bytes).
One Device present on each
DIMM.
Stores memory manufacturer
data and timing information
for correct operation of
CMOS memory 256 bytes.
UMA uses main system
memory size allocated out of
main memory.
board Coin
state below.
Dell PowerEdge T20
X
X X X
In
states
CAUTION:
power
Secondary power loss (removing
time-of-day
addition,
the following
All
other components on the motherboard will lose data once power
loss (Unplug the power cord and remove
information.
to clarify memory
is
provided
the
on board coin-cell battery) will destroy system data
volatility
and data
(those ACPI power states are S0, S1, S3, S4 and
the
battery) will destroy
retention
in
all
user data on
situations
is
removed from the
the
on the
system.
memory (DDR3,
system configuration
where the system is put in
S5):
• S0 state is the
• S1 state is a low
hardware maintains
• S3 is called “
will
be
support S3
able to go to S3 if the OS and the
working
wake-up
suspend
state.
state where the
dynamic
RAM is
maintained
and is
read/write
latency sleeping state. In this state, no system context is lost (CPU or chip set) and
all system contexts.
to RAM” state or
stand-by
peripherals
mode. In this state the
dynamic
RAM is
used in the system supports S3 state. Linux and
• S4 is called “
maintained.
volatile storage
a restore file from the
go to S4 if the OS and the
suspend
to disk” state or
If the system has been
file and leave
non-
appropriate
volatile storage can occur. The restore file has to be valid. Dell
peripherals
“hibernate”
commanded
mode. There is no power. In this state, the
to enter S4, the OS will write the system context to a
context markers. When the system is coming back to the
support S4 state.
Windows
support S4
state.
• S5 is the “soft” off state. There is no power. The OS does not save any context to wake up the
remain in any
awakened. Since
component
on the system board, i.e. cache or
S5 is the shut off state, coming out of S5
memory.
requires
The system will require a
power on which clears all
:
The
following
table shows all the states
Table 2. Supported A CPI Power States
Model
Number
supported
by
S0 S1 S3 S4 S5
Dell PowerEdge T20
Primary
1600MHz).
different
by the
processor.
maintained.
dynamic
systems
and
ACPI power
working
will be able to
system.
complete
registers.
Dell
systems
Windows
RAM is
not
non-
state,
No data will
boot when
NOTE:
For any information that you may need, direct your questions to your Dell Marketing contact.
© 2013 Dell Inc.
Trademarks used in this text: Dell™ and the DELL logo are trademarks of Dell Inc. Intel®, Pentium®, Xeon®, Core™ and Celeron® are registered
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