Datasheet

Intel® Solid-State Drive Pro 2500 Series (M.2)
October 2014 Product Specification
330902-002 25
Table 20: DevSleep Control Parameters
Parameter
Definition
Control
Recommended
Settings
DITO
DevSleep Idle Time Out – number of
milliseconds prior to host asserting
DevSleep
Set by Host
Active (lid-up): 375
DM
DITO Multiplier – set once at boot-up
Set by Host
15
MDAT
Minimum DevSleep Assertion Time –
minimum time in milliseconds for
host to assert DevSleep
Reported by Drive
10
DETO
DevSleep Exit Time Out – max time in
milliseconds from when DevSleep is
negated to when device ready to
detect OOB
Reported by Drive
20
Total time to DevSleep entry = DITO * (DM+1)
5.7 SMART Command Transport
With SMART Command Transport (SCT), a host can send commands and data to an SSD and receive status and
data from an SSD using standard write/read commands to manipulate two SMART Logs:
 Log Address E0h ("SCT Command/Status") — used to send commands and retrieve status
 Log Address E1h ("SCT Data Transfer") — used to transport data
5.8 SMART Attributes
The following two tables list the SMART attributes supported by the Intel® SSD Pro 2500 Series, and the
corresponding status flags and threshold settings.
Table 21: SMART Attributes
ID
Attribute
Status Flags
Threshold
SP
EC
ER
PE
OC
PW
05h
Re-allocated Sector Count
The raw value of this attribute shows the
number of retired blocks since leaving the
factory (grown defect count).
1
1
0
0
1
0
0 (none)
09h
Power-On Hours Count
The raw value reports two values: the first
4 bytes report the cumulative number of
power-on hours over the life of the device,
the remaining bytes report the number of
milliseconds since the last hour increment.
The On/Off status of the Device Initiated
Power Management (DIPM) feature will
affect the number of hours reported. If DIPM
is turned On, the recorded value for
power-on hours does not include the time
that the device is in a "slumber" state. If
DIPM is turned Off, the recorded value for
1
1
0
0
1
0
0 (none)