Episode filesystem

Summary

Episode is a POSIX compliant file system most commonly known for its use in DCE/DFS file servers. It was designed to achieve the goals of portability, scaling, and to make more efficient use of available system bandwidth. It used a variety of methods to achieve these goals, one of which was its use of metadata logging, designed to enhance the file system's performance.

Episode
Developer(s)Transarc
Full nameEpisode
Introduced1992; 32 years ago (1992)
Structures
Directory contents8KB blocks with hash table
File allocationinode-based
Limits
Max filename length256 bytes
Features
ForksNo
AttributesPOSIX
File system
permissions
POSIX ACLs
Transparent
compression
No
Transparent
encryption
No
Other
Supported
operating systems
AIX, Solaris, z/OS

The Episode file system is the basis for the IBM z/OS POSIX-compatible file system called zFS.[1]

References edit

  1. ^ Rogers, Paul; Conway, Richard. "ABCs of z/OS System Programming: Volume 9" (PDF). Redbooks. IBM. Retrieved 1 May 2022.

External links edit

  • The Episode File System (USENIX Paper)