Episode filesystem

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Episode
Developer	Transarc
Full name	Episode
Introduced	1992 ()
Partition identifier
Structures
Directory contents	8KB blocks with hash table
File allocation	inode-based
Bad blocks
Limits
Max file size
Max number of files
Max filename length	256 bytes
Max volume size
Allowed characters in filenames
Features
Dates recorded
Date range
Date resolution
Forks	No
Attributes	POSIX
File system permissions	POSIX ACLs
Transparent compression	No
Transparent encryption	No
Supported operating systems	AIX, Solaris, z/OS

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.

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