Product Guide
CONTEC CO., LTD.
3-9-31, Himesato, Nishiyodogawa-ku, Osaka 555-0025, Japan
https://www.contec.com/
No part of this document may be copied or reproduced in any form by any means
without prior written consent of CONTEC CO., LTD.
NA07655 (LYYS531) [09012020] September 2020 Edition
2.5-inch 256GB SATA SSD
SSD-256GS-2T
Thank you for purchasing this product. The product you have purchased consists of the
following items.
Check, with the following list, that your package is complete.
If you find any item either missing or damaged, please contact the sales representative you
purchased the product from.
1. About the Product
This product is a solid state drive in accordance with 2.5-inch SATA standard.
Please use this product in accordance with the procedures described in this document.
This product can be used for the CONTEC’s following models. (Don’t use this product with
any other devices.)
Target Products
This product is the FA computer (VPC series) and custom-made PC (Solution-ePC)
* The RAID function cannot be used with this product. The SSD-256GS-2TR is available for
RAID function specifically.
2. Product Configuration
This product consists of the items listed below.
Check, with the following list, that your package is complete. If you discover damaged or
missing items, contact your retailer.
Product...1
Product Guide...1
Warranty Certificate...1
Serial Number Label...1
3. Safety Precautions
Understand the following definitions and precautions to use the product safely.
Safety Information
This document provides safety information using the following symbols to prevent
accidents resulting in injury or death and the destruction of equipment and resources.
Understand the meanings of these labels to operate the equipment safely.
DANGER
Signal word used to indicate an imminently hazardous sit-
uation which, if not avoided, will result in death or serious
injury.
WARNING
Signal word used to indicate a potentially hazardous situ-
ation which, if not avoided, could result in death or seri-
ous injury.
CAUTION
Signal word used to indicate a potentially hazardous situ-
ation which, if not avoided, could result in minor or mod-
erate injury.
Handling Precautions
WARNING
Do not modify the product. Doing so may cause fire, electric shock.
If smoke or abnormal odor is detected, immediately turn off the PC and peripheral
devices and unplug the power cables.
Never touch this product with wet hands. Doing so can short-circuit the product to
cause fire, electric shock, and/or failure.
CAUTION
Do not use the product in water, oil, chemical solution, organic solvents, or any other
fluid.
Do not use the product in a location exposed to direct sun, outdoors or dust.
Do not use the product in a location exposed to sea breeze, a large amount of corrosive
gases such as Cl2, H2S, NH3, SO2, or NO2.
Do not use the product in the environment with strong static electricity or
electromagnetic waves. It may cause failure.
Do not use this product fully sealed or coated with such as resin.
Take countermeasures beforehand to handle the product and avoid a shock.
Do not touch the connector pin with your hand or put foreign objects into connector
mating part.
This is a precision product. Handle with care when transporting or assembling.
Be sure to turn off the product power before inserting or removing the interface
connector.
CONTEC bears absolutely no responsibility for use if modified drive.
Excessive vibration or impact greater than its specification, if this SSD is subjected to,
might cause a fatal error that is not recoverable.
SSD has a lifetime. Refer to the write endurance for longevity. These are the standard
values when the environmental and operational conditions specified in the table below
are observed and are not the guaranteed values.
This product is designed to be plugged only in one orientation. Do not force it to be
plugged in.
No part of this document may be copied or reproduced in any form by any means
without prior written consent of CONTEC CO., LTD.
The contents of this document may be changed in the future without prior notice.
All relevant issues have been considered in the preparation of this document. Should
you notice an omission or any questionable item in this document, please feel free to
notify CONTEC CO., LTD.
Regardless of the foregoing statement, CONTEC assumes no responsibility for any errors
that may appear in this document or for any results of using the product.
This product is not formatted. Please be sure to format before use.
The drive may be damaged if the product power is turned off during initialization after
the powering on the product. Do not turn off the power within 30 seconds after turning
on the product power.
Disclaimers
We shall not be liable for any consequential damages such as losses and lost profits
resulting from the operation of this product. For any reason we shall provide no warranty
for the stored contents on your hard disk.
Disposal
When disposing of the product, follow the disposal procedures stipulated under the
relevant laws and municipal ordinances.
4. About write endurance
SSD has write endurance which limits the number of times each memory may be written,
due to the characteristic of the memory that is used. Write endurance can be calculated
by the following formula as a reference value:
The write endurance of SSD is determined with the total capacity.
Life expectancy can be calculated by the number of writing per day.
The number of writing into drive per day (DWPD) =
SSD’s TBW(TB) x 1000
365 days x years x SSD user capacity
The actual TBW is determined by the free space (available space for user).
If the SSD has 128GB capacity and TBW = 80TB, and the user available space (rewrite area)
is 1/2 size, the expected life can be calculated with an assumption that TBW is half of 40TB.
When the 4MB file of 128GB capacity and TBW = 80TB, user available space (rewrite area)
is 2/3 size is made, and rewrites once per 10 seconds.
Writing size per day = 4 x 6 x 60 x 24 = 34.56GB
Write endurance = 80(TB) x 2/3 x 1000 / 34.56(GB) / 365 ≈ 4.3(years)
These are reference values. Confirm its longevity by the following S.M.A.R.T. after installing
the specific software (*) and implement tentative writing.
Life expectancy can be obtained by installing the self- diagnosis program that acquires
S.M.A.R.T. information of SSD.
5. Specifications
Item
Specifications
Form factor
2.5inch
Host interface
SATA III (6.0Gbps)
Installed Memory
3D TLC NAND Flash memory
Total capacity
249,157,628 KByte
LBA
498,315,256
Transfer velocity
Read
560 Mbit/sec *1
Write
410 Mbit/sec *1
Input voltage
+5VDC (±5%)
Current consump-
tion
Idle
80mA (typ.)
Read
480mA (typ.)
Write
520mA (typ.)
Environment
Operating
Temperature
0 - +70°C
Humidity
5 - 95%RH (With no condensation)
Corrosive gases
None
Swept sine vibra-
tion
20G or less (7 – 2,000Hz)
Shock
1500G or less (0.5ms, 3axis)
Non-operating
Temperature
-40 - +85°C
Humidity
5 - 95%RH (With no condensation)
Corrosive gases
None
Swept sine vibra-
tion
20G or less (7 – 2,000Hz)
Shock
1500G or less (0.5ms, 3axis)
Total capacity (TBW)
440TB
Physical dimensions (mm)
69.85(W)×100.0(D)×6.8(H)
Weight
54g (Max.)
*1 It might differs depending on the software or host to be used.
6. Connector Pin Assignment
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
S1
GND
S2
A+
S3
A-
S4
GND
S5
B-
S6
B+
S7
GND
P1
N.C.
P2
N.C.
P3
DEVSLP
P4
GND
P5
GND
P6
GND
P7
5V
P8
5V
P9
5V
P10
GND
P11
DAS
P12
GND
P13
N.C.
P14
N.C.
P15
N.C.
7. Physical Dimensions
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