M.2 2242 Flash Drive
APM2T42P100xxxxAN-XTX
9
© 2015 Apacer Technology Inc. Rev. 1.2
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:
ACTIVE: PHY ready, full power, Tx & Rx operational
PARTIAL: Reduces power, resumes in under 10 µs (microseconds)
SLUMBER: Reduces power, resumes in under 10 ms (milliseconds)
HIPM: Host-Initiated Power Management
DIPM: Device-Initiated Power Management
AUTO-SLUMBER: Automatic transition from partial to slumber.
Device Sleep (DevSleep or DEVSLP): PHY powered down; power consumption ≦ 5 mW; host
assertion time ≦ 10 ms; exit timeout from this state ≦ 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.
4.8 Endurance
The endurance of a storage device is predicted by Tera Bytes Written based on several factors related to
usage, such as the amount of data written into the drive, block management conditions, and daily
workload for the drive. Thus, key factors, such as Write Amplifications and the number of P/E cycles, can
influence the lifespan of the drive.
Notes:
The measurement assumes the data written to the SSD for test is under a typical and constant rate.
The measurement follows the standard metric: 1 TB (Terabyte) = 1000 GB.
This estimation complies with JEDEC JESD-219, enterprise endurance workload of random data
with payload size distribution.
