Transaction-Safe FAT File System (TFAT) and Transaction-Safe Extended FAT File System (TexFAT) refer to two file systems used in Microsoft products to provide transaction-safety for data stored on a disk. The goal is to reduce the risk of data loss in cases of power loss or unexpected removal of the drive. The latter problem has become more common with the spread of USB drives.
The Transaction-Safe FAT File System (TFAT) of the TFAT12, TFAT16 and TFAT32 file systems is a driver layer modification to the original FAT file systems FAT12, FAT16 and FAT32 maintaining two copies (FAT 0 and FAT 1) of the file allocation table instead of two identical ones. While performing a drive operation, changes would be made to FAT 1. When the operation is complete, the FAT 1 table would be copied to FAT 0, updating the stable view of the file system.[1]
The Transaction-Safe Extended FAT File System (TexFAT), TexFAT provides similar functionality to TFAT using the exFAT file system as the base file system instead of FAT. Introduced with Windows Embedded CE 6.0, it is sometimes referred to as TFAT as well, which can lead to confusion with the original TFAT described above.[2]
The use of exFAT as the underlying file system allows for larger files and larger partitions. TexFAT requires a hardware-specific driver designed for the type of media on which the TexFAT volume resides.[2]
Limitationsedit
Due to the lack of support in desktop operating systems, neither TFAT nor TexFAT are recommended for removable media. While the desktop OS could still read the drive, it could not use the transaction-safe features, so unexpected removal or a power outage could lead to data loss. In addition, directories created under the desktop OS may not be transaction-safe even if the drive is later attached to a TFAT/TexFAT aware operating system.[1]
Munegowda, Keshava; Raju, G.T.; Raju, Veera Manikandan; Manjunath, T.N. (December 2014). Design Methodologies of Transaction-Safe Cluster Allocations in TFAT File System for Embedded Storage Devices. 2014 International Conference on Information Technology. IEEE. doi:10.1109/ICIT.2014.22.
Munegowda, Keshava; Raju, G.T.; Raju, Veera Manikandan; Manjunath, T.N. (2014-12-11). Characterization of Transaction-Safe Cluster Allocation Strategies of TexFAT File System for Embedded Storage Devices. Computational Intelligence in Data Mining. doi:10.1007/978-81-322-2205-7_47.
April 09, 2024
transaction, safe, file, system, tfat, transaction, safe, extended, file, system, texfat, refer, file, systems, used, microsoft, products, provide, transaction, safety, data, stored, disk, goal, reduce, risk, data, loss, cases, power, loss, unexpected, removal. Transaction Safe FAT File System TFAT and Transaction Safe Extended FAT File System TexFAT refer to two file systems used in Microsoft products to provide transaction safety for data stored on a disk The goal is to reduce the risk of data loss in cases of power loss or unexpected removal of the drive The latter problem has become more common with the spread of USB drives Contents 1 TFAT 2 TexFAT 3 Limitations 4 See also 5 References 6 Further readingTFAT editThe Transaction Safe FAT File System TFAT of the TFAT12 TFAT16 and TFAT32 file systems is a driver layer modification to the original FAT file systems FAT12 FAT16 and FAT32 maintaining two copies FAT 0 and FAT 1 of the file allocation table instead of two identical ones While performing a drive operation changes would be made to FAT 1 When the operation is complete the FAT 1 table would be copied to FAT 0 updating the stable view of the file system 1 Further information Design of the FAT file system CLUST 1TexFAT editThe Transaction Safe Extended FAT File System TexFAT TexFAT provides similar functionality to TFAT using the exFAT file system as the base file system instead of FAT Introduced with Windows Embedded CE 6 0 it is sometimes referred to as TFAT as well which can lead to confusion with the original TFAT described above 2 The use of exFAT as the underlying file system allows for larger files and larger partitions TexFAT requires a hardware specific driver designed for the type of media on which the TexFAT volume resides 2 Limitations editDue to the lack of support in desktop operating systems neither TFAT nor TexFAT are recommended for removable media While the desktop OS could still read the drive it could not use the transaction safe features so unexpected removal or a power outage could lead to data loss In addition directories created under the desktop OS may not be transaction safe even if the drive is later attached to a TFAT TexFAT aware operating system 1 See also editDesign of the FAT file system Novell Transaction Tracking SystemReferences edit a b TFAT Overview Microsoft Developer Network 2015 11 17 Retrieved 2019 12 05 a b Transaction Safe Extended FAT File System Microsoft Developer Network 2010 03 18 Retrieved 2019 12 05 Further reading editMunegowda Keshava Raju G T Raju Veera Manikandan Manjunath T N December 2014 Design Methodologies of Transaction Safe Cluster Allocations in TFAT File System for Embedded Storage Devices 2014 International Conference on Information Technology IEEE doi 10 1109 ICIT 2014 22 Munegowda Keshava Raju G T Raju Veera Manikandan Manjunath T N 2014 12 11 Characterization of Transaction Safe Cluster Allocation Strategies of TexFAT File System for Embedded Storage Devices Computational Intelligence in Data Mining doi 10 1007 978 81 322 2205 7 47 Retrieved from https en wikipedia org w index php title Transaction Safe FAT File System amp oldid 1032718467 TFAT, wikipedia, wiki, book, books, library,
