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6.1.6
Over Provisioning
Over Provisioning refers to the inclusion of extra NAND capacity in a SSD, which is not visible and cannot be used by
users. With Over Provisioning, the performance and IOPS (Input/output Operations per Second) are improved by
providing the controller additional space to manage P/E cycles, which enhances the reliability and endurance as well.
Moreover, the write amplification of the SSD becomes lower when the controller writes data to the flash.
6.1.7
Firmware Upgrade
Firmware can be considered as a set of instructions on how the device communicates with the host. Firmware will be
upgraded when new features are added, compatibility issues are fixed, or read/write performance gets improved.
6.1.8
Thermal Throttling
The purpose of thermal throttling is to prevent any components in a SSD from over-heating during read and write
operations. The device is designed with an on-die and an on-board thermal sensor, and with its accuracy, firmware can
apply different levels of throttling to achieve the purpose of protection efficiently and proactively via SMART reading.
Table 9 Current version: Thermal Throttling 2.0
Smart reporting temperature
Reference of temp. reading
tmt1 threshold
tmt2 threshold
Protect threshold
Protect controller threshold
Fatal threshold
Resume performance threshold
Temperature polling frequency
TMT1_state impact
TMT2_state impact
Seagate BarraCuda 510 SSD Product Manual, Rev A
Item
Content
Flash normalized case temperature
On-board thermal sensor, Controller on-die thermal
sensor
°
68
C per Smart reported
°
70
C per Smart reported
°
80
C per Smart reported
°
110
C from on-die thermal sensor
°
120
C from on-die thermal sensor
°
60
C per Smart reported
Every 1 sec
-10% CE
-30% CE
18
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