Traditional file systems employ block-based allocation schemes that provide adequate random access and latency for small files, but which limit throughput for larger files. As a result, they are less than optimal for commercial environments.
Veritas File System (VxFS) addresses this file system performance issue through an alternative allocation method and increased user control over allocation, I/O, and caching policies.
VxFS provides the following performance enhancements:
Data synchronous I/O
Direct I/O and discovered direct I/O
Enhanced directory features
Explicit file alignment, extent size, and preallocation controls
Tunable I/O parameters
Integration with Veritas Volume Manager (VxVM)
Support for large directories