M.2 2242 Flash Drive
APM2T42P100xxxxAN-XTMX
9
© 2015 Apacer Technology Inc. Rev. 1.5
4.6 TRIM
TRIM is a feature which helps improve the read/write performance and speed of solid-state drives (SSD).
Unlike hard disk drives (HDD), SSDs are not able to overwrite existing data, so the available space
gradually becomes smaller with each use. With the TRIM command, the operating system can inform the
SSD which blocks of data are no longer in use and can be removed permanently. Thus, the SSD will
perform the erase action, which prevents unused data from occupying blocks all the time.
4.7 SATA Power Management
By complying with SATA 6.0 Gb/s specifications, the SSD supports the following SATA power saving
modes:
y ACTIVE: PHY ready, full power, Tx & Rx operational
y PARTIAL: Reduces power, resumes in under 10 μs (microseconds)
y SLUMBER: Reduces power, resumes in under 10 ms (milliseconds)
y HIPM: Host-Initiated Power Management
y DIPM: Device-Initiated Power Management
y AUTO-SLUMBER: Automatic transition from partial to slumber.
y Device Sleep (DevSleep or DEVSLP): PHY powered down; power consumption ʀ 5 mW; host
assertion time ʀ 10 ms; exit timeout from this state ʀ 20 ms (unless specified otherwise in SATA
Identify Device Log).
Note:
1. The behaviors of power management features would depend on host/device settings.
2. Device Sleep mode is optional, depending on product ordering selections.
