Enterprise Vault writes files compressed in the storage. If you are going to enable dedup in the NetApp device, then you need to modify the NetApp partitions properties and enable the option: "". If you don't enable this option, EV will continue compressing the files in the storage and the dedup will not affect this process at all, but in the dedup report in the NetApp, you won't see space savings:
Device performs data deduplication. Some devices can deduplicate data by storing a single copy of identical data blocks that different applications create. For example, Enterprise Vault and a backup application might create identical data blocks.
If this check box is selected Enterprise Vault writes files in their native uncompressed format, which is a prerequisite for deduplication. You therefore lose the storage savings that Enterprise Vault compression normally provides. We therefore recommend that you select the check box only if all of the following conditions apply:
The device is configured to deduplicate stored data.
Multiple applications are likely to store identical data to the device.
The device both supports data compression and is configured to perform it.
Otherwise the storage savings are likely to be greater if Enterprise Vault writes the files in compressed format.
I hope this helps.
