Envoy Data

  • Phone: 1-800-368-6971
  • Mail: 1310 W. Boxwood Avenue | Gilbert, AZ 85233
  • Website: envoydatamemory.com
  • Address: sales@envoydatamemory.com

Industrial 1.8'' PATA SSDs

SSDs-1.8'' PATA

Solid State Drives (Industrial SSDs) are very robust and low power replacements for Hard Disk Drives (HDDs).  SSDs have no moving parts, so vibration and shock tolerance are greatly improved over mechanical Hard Disk Drives, resulting in a much better solution for mobile applications.  IDE or Parallel ATA (PATA) SSDDs use the standard PATA interface, and are capable of up to Read: up to 80 MB/s, Write: up to 65 MB/s.

Envoy Data Memory SSDs – 1.8″ PATA Data Sheet

Envoy Data Memory offers a broad selection of PATA SSD products that meet the harshest of applications in commercial, industrial and SSD military markets.  Our PATA 1.8” SSDs are offered in commercial or industrial temperature range, made with either Multi-Level Cell (MLC), Econo Single Level Cell (EconoSLC™) or Single Level Cell (SLC) NAND Flash.

Flash Management

Error Correction Code (ECC)
Flash memory cells will deteriorate with use, which might generate random bit errors in the stored data. Thus, ENVOY’S 1.8’’ PATA SSD applies the BCH ECC algorithm, which can detect and correct errors occur during read process, ensure data been read correctly, as well as protect data from corruption.

Wear Leveling
NAND flash devices can only undergo a limited number of program/erase cycles, and in most cases, the flash media are not used evenly. If some areas get updated more frequently than others, the lifetime of the device would be reduced significantly. Thus, Wear Leveling is applied to extend the lifespan of NAND flash by evenly distributing write and erase cycles across the media. Envoy provides advanced Wear Leveling algorithm, which can efficiently spread out the flash usage through the whole flash media area. Moreover, by implementing both dynamic and static Wear Leveling algorithms, the life expectancy of the NAND flash is greatly improved.

Bad Block Management
Bad blocks are blocks that include one or more invalid bits, and their reliability is not guaranteed. Blocks that are identified and marked as bad by the manufacturer are referred to as “Initial Bad Blocks”. Bad blocks that are developed during the lifespan of the flash are named “Later Bad Blocks”. Envoy implements an efficient bad block management algorithm to detect the factory-produced bad blocks and manages any bad blocks that appear with use. This practice further prevents data being stored into bad blocks and improves the data reliability.

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.

Advanced Device Security Features

Secure Erase
Secure Erase is a standard ATA command and will write all “0xFF” to fully wipe all the data on hard drives and SSDs. When this command is issued, the SSD controller will erase its storage blocks and return to its factory default settings.

Write Protect
When a SSD contains too many bad blocks and data are continuously written in, then the SSD might not be usable anymore. Thus, Write Protect is a mechanism to prevent data from being written in and protect the accuracy of data that are already stored in the SSD.

SSD Lifetime Management

Terabytes Written (TBW)
TBW (Terabytes Written) is a measurement of SSDs’ expected lifespan, which represents the amount of data written to the device. To calculate the TBW of a SSD, the following equation is applied: TBW = [(NAND Endurance) x (SSD Capacity) x (WLE)] / WAF NAND Endurance: NAND endurance refers to the P/E (Program/Erase) cycle of a NAND flash. SSD Capacity: The SSD capacity is the specific capacity in total of a SSD. WLE: Wear Leveling Efficiency (WLE) represents the ratio of the average amount of erases on all the blocks to the erases on any block at maximum. WAF: Write Amplification Factor (WAF) is a numerical value representing the ratio between the amount of data that a SSD controller needs to write and the amount of data that the host’s flash controller writes. A better WAF, which is near 1, guarantees better endurance and lower frequency of data written to flash memory.

Interface Standard ATA/IDE Bus Interface Standard ATA/IDE Bus Interface Standard ATA/IDE Bus Interface
Connector Standard 40-pin 1.8” form factor Standard 40-pin 1.8” form factor Standard 40-pin 1.8” form factor
Physical Form Factor 71mm x 54mm x 5mm 71mm x 54mm x 5mm 71mm x 54mm x 5mm
Industry Standard
Flash Type  Toshiba A19 MLC Toshiba A19 MLC Toshiba 24mm SLC
Density  4GB – 256GB 4GB ~ 128GB 4GB – 128GB
Data Retention  10 years FOB / 1 Year EOL 10 years FOB / 1 Year EOL 10 years FOB / 1 Year EOL
Operating Temperature  Commercial: 0°C to 70°C Commercial: 0°C to 70°C
Industrial: -40°C to 85°C
Commercial: 0°C to 70°C
Industrial: -40°C to 85°C
Shock  1500 G 1500 G 1500 G
Vibration  20 G 20 G 20 G
Humidity 85% RH 85°C, 1000 Hrs 85% RH 85°C, 1000 Hrs 85% RH 85°C, 1000 Hrs
Read Performance up to 80 MB/s up to 80 MB/s up to 80 MB/s
Write Performance up to 65 MB/s up to 65 MB/s up to 65 MB/s
Voltage 3.3 VDC 3.3 VDC 3.3 VDC
Power – Read Up to 940mW Up to 940mW Up to 940mW
Power – Write Up to 1,200mW Up to 1,200mW Up to 1,200mW
Power – DEVSLP  up to 5mW Up to 5mW Up to 5mW

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