# Changing the Dell EMC VPLEX Backend Engine

If you need to change the engine that the Dell EMC VMAX uses, update the VPLEX_VMAX_SNAP_ENGINE_<ArraySerial> additional setting. The default snapshot engine is Dell EMC TimeFinder Snap.

## Procedure

- To the MediaAgent client, add the additional setting as shown in the following table.

  For instructions on how to add additional settings from the CommCell Console, see Adding or Modifying Additional Settings from the CommCell Console.

Additional setting | Category | Type | Value
--- | --- | --- | ---
VPLEX_VMAX_SNAP_ENGINE_<ArraySerial> | MediaAgent | String | vpsnap: Dell EMC TimeFinder VP Snap snapvx: Dell EMC TimeFinder SnapVX snapvxcli: Dell EMC TimeFinder SnapVX(SYMCLI)

where:

ArraySerial is the serial number of the storage array that you want to define.

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