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TFS4™

TFS4

SAMSUNG TFS4(Transactional File System 4) is an embedded file system to use OneNAND flash memory in the most stable and effective way.

TFS4 offers a complete file system solution to the company who tries to use OneNAND flash memory in their product without additional efforts.

SAMSUNG TFS4 is an embedded flash file system to use OneNAND flash memory as storage on any consumer electronic devices. It overcomes the existing FAT's weakness over the power off recovery, and is fast recovered even if the power is suddenly lost. SAMSUNG TFS4 perfectly compatible with FAT file system that has been used in most operating systems, and so multimedia data stored in OneNAND flash memory can be detected to any other systems.

SAMSUNG TFS4 has basic functionalities as traditional file system that enables to organize data stored in OneNAND flash memory in a file, directory, and volume. It includes a FTL that makes OneNAND flash memory emulate a normal hard disk drive, and so enables optimized data management as well as file management to OneNAND flash memory.

SAMSUNG TFS4 offers broad support for the most popular RTOSes such as Nucleus, pSOS, RTKE, REX. Delivering SDK gives you the option to customize software for OneNAND flash memory. It has the layered architecture for higher portability and easier maintenance and so that enables to support virtually any other OS or platform.

SAMSUNG TFS4 is designed to use OneNAND flash in the most stable and effective way. It offers a complete file system solution to the company who tries to use OneNAND flash memory in their product without additional efforts.

SAMSUNG TFS4 Architechure
Perfectly FAT-compatible

SAMSUNG TFS4 is absolutely compatible with FAT16/32 file systems so that flash data can be detected in any other CE devices or PC.

Long file name support

SAMSUNG TFS4 supports a long file name. A file name can be up to 255 characters, and a directory name can be up to 243 characters (in Unicode).

Superior OneNAND Flash Memory Management
SAMSUNG TFS4 makes entire blocks of OneNAND flash memory being used evenly by advanced wear level algorithm, so it expands the life span of device.

System Robustness
SAMSUNG TFS4 reliably runs at any time. Even if the power is suddenly lost, it recovers fast and normally run. With implementing the log-based file system, SAMSUNG TFS4 preserves meta-data integrity of file system, and it makes file system restart faster after a crash.

Removable Device Support
SAMSUNG TFS4 supports both internal and external storage devices. It runs stably when the external storage device such MMC (Multi Media Card) is suddenly inserted or ejected.

Convenient Storage Management by Partition
SAMSUNG TFS4 allows OneNAND flash memory being managed to a few partitions like a hard disk drive. It supports multiple volumes up to five; four volumes are used for the internal storage device and one volume is used for the external one. Only the first partition can be used if the external storage device is divided in more than one partition.

SAMSUNG TFS4 Documentation
Category Documentation Name Public
Manual SAMSUNG TFS4 Porting Guide O
SAMSUNG TFS4 Pre-programming Guide X