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What is Transaction Tracking System mean?
In computing, a NetWare File System (NWFS) is a file system based on a heavily modified version of FAT. It was used in the Novell NetWare operating system. It is the default and only file system for all volumes in versions 2.x through 4.x, and the default and only file system for the SYS volume continuing through version 5.x. Novell developed two varieties of NWFS:
16-bit NWFS 286, used in NetWare 2.x32-bit NWFS 386, used in NetWare 3.x through NetWare 6.x.Novell Storage Services (NSS, released in 1998), superseded the NWFS format.
The NWFS on-disk format was never publicly documented by Novell. The published specifications for 32-bit NWFS are:
Maximum file size: 4 GBMaximum volume size: 1 TBMaximum files per volume: 2 million when using a single name space.Maximum files per server: 16 millionMaximum directory entries: 16 millionMaximum volumes per server: 64Maximum volumes per partition: 8Maximum open files per server: 100,000Maximum directory tree depth: 100 levelsCharacters used: ASCII double-byteMaximum extended attributes: 512Maximum data streams: 10Support for different name spaces: Microsoft Windows Long names (a.k.a. OS/2 namespace), Unix, Apple MacintoshSupport for restoring deleted files (salvage)Support for journaling (Novell Transaction Tracking System a.k.a. TTS)Support for block suballocation, starting in NetWare 4.xFor larger files the file system utilized a performance feature named Turbo FAT.
Transparent file compression was also supported, although this had a significant impact on the performance of file serving.
Every name space requires its own separate directory entry for each file. While the maximum number of directory entries is 16,000,000, two resident name spaces would reduce the usable maximum number of directory entries to 8,000,000, and three to 5,333,333.
16-bit NWFS could handle volumes of up to 256 MB. However, its only name-space support was a dedicated API to handle Macintosh clients.
referencePosted on 11 Nov 2024, this text provides information on Miscellaneous in Computing related to Computing. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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