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Veritas supports the use of ECS versions 3.3, 3.4, 3.5, 3.6, 3.7, and 3.8 with version 12.x and 14.x of Enterprise Vault for both WORM and NON-WORM.
These ECS versions are also supported with Enterprise Vault when ECS is used as secondary storage (see separate whitepaper).
For a detailed support matrix for all versions of Enterprise Vault, including support for third-party software and hardware components, see Enterprise Vault Compatibility Charts. Always check the Veritas compatibility charts to confirm support.