Features

zFS provides many features and benefits, which are described in the following sections:

Performance

zFS provides significant performance gains in many customer environments. zFS provides additional performance improvements when running sysplex-aware in a shared file system environment.

Restart

zFS reduces the exposure to loss of updates. zFS writes data blocks asynchronously and does not wait for a sync interval. zFS is a logging file system. It logs metadata updates. If a system failure occurs, zFS replays the log when it comes back up to ensure that the file system is consistent.

Aggregate movement

As a part of supporting read/write mounted file systems that are accessed as sysplex-aware, zFS automatically moves zFS ownership of a zFS file system to the system that has the most read/write activity. Terminology and concepts has an explanation of z/OS® UNIX file system ownership and zFS file system ownership. Using zFS in a shared file system environment contains details.