Serial ATA Flash Drive
APS25AXXxxxx-XTX
3
©2014 Apacer Technology Inc. Rev. 1.3
1. Product Description
1.1 Introduction
Apacer’s SFD25A is a well-balanced solid-state disk (SSD) drive with standard form factor and great
performance. Designed in SATA 6.0 Gbps interface, the SSD is able to deliver exceptional read/write speed,
making it the ideal companion for heavy-loading industrial or server operations. In regard of reliability, the drive
comes with various implementations including powerful hardware ECC engine, power saving modes, wear
leveling, flash block management, S.M.A.R.T., TRIM, and power failure management.
1.2 Capacity Specification
Table 1-1 Capacity specification
Capacity Total Bytes* Cylinders
Heads Sectors Max LBA*
8 GB 8,012,390,400 15,525 16 63 15,649,200
16 GB 16,013,942,784 16,383 16 63 31,277,232
32 GB 32,017,047,552 16,383 16 63 62,533,296
64 GB 64,023,257,088 16,383 16 63 125,045,424
128 GB 128,035,676,160 16,383 16 63 250,069,680
*Display of total bytes varies from file systems.
**Cylinders, heads or sectors are not applicable for these capacities. Only LBA addressing applies.
LBA count addressed in the table above indicates total user storage capacity and will remain the same throughout the lifespan of
the device. However, the total usable capacity of the SSD is most likely to be less than the total physical capacity because a small
portion of the capacity is reserved for device maintenance usages.
1.3 Performance
Table 1-2 Performance (Standard)
Capacity
Performance
8 GB 16 GB 32 GB 64 GB 128 GB
Sustained Read
(MB/s)
155 155 160 160 160
Sustained Write
(MB/s)
110 145 145 150 150
Table 1-3 Performance (High-speed)
Capacity
Performance
32 GB 64 GB 128 GB
Sustained Read
(MB/s)
530 530 530
Sustained Write
(MB/s)
270 440 445
Random Read
IOPS (4K)
81,000 82,000 82,000
Random Write
IOPS (4K)
62,000 73,000 76,000
Note: Performance varies from flash configurations or host system settings.
IOPS: measured on 8GB span (16777216 sectors Disk Size), 32 Outstanding I/Os (QD=32), Full Random Data pattern,
4KB Align I/Os and test durations 15minutes.
