Hagiwara Sys-Com Adds Several 2.5-Inch SATA SSDs

Headquartered in Nagoya, Japan, Hagiwara Sys-Com Co., Ltd., in semiconductor application products for industrial/embedded computing , announced new additions to its TRUESSD product family: The DFD series for mission critical applications and the SFD series for enterprise applications.

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These new models were developed based on the well-received ‘TRUESSD HFD series’ that offers high data reliability and outstanding drive endurance.

The DFD series targets mission critical applications by adding support for specific requirements in the market segment such as a hardware trigger jumper to attach a physical switch for hardware-initiated secure erase.

SFD series targets enterprise storage / server applications. The enhanced DRAM cache provides a 50% increase in read/write performance, 95MB/ sec and 60MB/sec. respectively, in comparison to the base model.

Both series are built with 100% pre-screened single level cell NAND flash components in 2.5-inch form factor SATA interface.

The continuous shrinking geometry of NAND flash impacts overall reliability. The two specific areas impacted are increased raw bit error and decreased program-erase cycles. The TRUESSD flash controller, used in the HFD/SFD/DFD series, is designed to minimize these impacts in an effort to provide the same level of reliability that previous NAND generation products have been able to achieve.

The TRUESSD possesses multi-channel flash access and provides 8-bit ECC On-The-Fly for each flash channel to address the increasing raw bit error of NAND flash.

One cause of the increasing raw bit error is induced by very high number of read access to a specific page within the NAND flash, known as Read Disturb. The TRUESSD controller takes a proactive approach to prevent this error from occurring by monitoring read cycles and performing ‘Refresh’, a re-write cycle, on potentially affected memory blocks.

NAND flash has a finite program erase cycle and this number is declining as geometry shrink progresses. The TRUESSD controller performs static wear- leveling that distributes write operations evenly over the entire media to maximize drive longevity and an intelligent cache algorithm reduces the number of write access to the NAND flash by organizing smaller fragmented data into larger data blocks.

The TRUESSD controller also offers a wear indicator LED for on-site device monitoring that signals the number of remaining replacement blocks of the device as well as S.M.A.R.T. commands for remote monitoring that can provide additional information of the device condition.

"Merely designing a fast solid state drive was not our focus. Hagiwara placed a high priority on data integrity and drive longevity. The result was the TRUESSD controller," said Moto Watanabe, US Product Manager. "In response to the many clients requesting for certain features to be added to the currently released HFD series, we came to the decision of releasing the DFD for mission critical applications and the SFD for enterprise server applications where downtime is not an option."

DFD series