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Facilità d'uso
User Accessible
Remedial Action
Reference
Description
Volatility Description
for external
(action necessary to
Designator
data
lose data)
Video memory –
UMA
Volatile memory in off state.
No
Power off
frame buffer
architecture-
uses system
UMA uses main system
DDR3L.
memory size allocated out of
main memory.
Hard drive(s)
User replaceable
Non Volatile magnetic media,
Yes
Low level format
various sizes in GB. May also be
SSD (solid state flash drive)
M.2 SATA
User replaceable
M.2 SATA 2260 SSD module
Yes
Low level format
All other components on the motherboard will lose data once power is removed from the system. Primary power loss
(Unplug the power cord and remove the battery) will destroy all user data on the memory (DDR3L). Secondary power loss
(removing the on board coin-cell battery) will destroy system data on the system configuration and time-of-day
information.
In addition, to clarify memory volatility and data retention in situations where the system is put in different ACPI power
states the following is provided (those ACPI power states are S0, S1, S3, S4 and S5):
• S0 state is the working state, where the dynamic RAM is maintained and is read/write by the processor.
• S1 state is a low wake-up latency sleeping state. In this state, no system context is lost (CPU or chip set) and
hardware maintains all system contexts.
• S3 is called “suspend to RAM” state or stand-by mode. In this state the dynamic RAM is maintained. Dell systems
will be able to go to S3 if the OS and the peripherals used in the system supports S3 state. Linux, Win 8.x and Win7
support S3 state.
• S4 is called “suspend to disk” state or “hibernate” mode. There is no power. In this state, the dynamic RAM is not
maintained. If the system has been commanded to enter S4, the OS will write the system context to a non-
volatile storage file and leave appropriate context markers. When the system is coming back to the working state,
a restore file from the non-volatile storage can occur. The restore file has to be valid. Dell systems will be able to
go to S4 if the OS and the peripherals support S4 state. Win 8.x and Win 7 support S4 state.
• S5 is the “soft” off state. There is no power. The OS does not save any context to wake up the system. No data will
remain in any component on the system board, i.e. cache or memory. The system will require a complete boot
when awakened. Since S5 is the shut off state, coming out of S5 requires power on which clears all registers.
The following table shows all the states supported by Dell Latitude 3150:
Model Number
S0 S1 S3 S4 S5
Dell Latitude 3150
X
X
X
X
X
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in the United States and/or other countries. Red Hat Enterprise Linux® and Enterprise Linux® are registered trademarks of Red Hat, Inc.
in the United States and/or other countries. Novell® is a registered trademark and SUSE ™ is a trademark of Novell Inc. in the United
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