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DOCS-1371 clarify numbers of geospatial indexes allowed #924

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DOCS-1371 clarify numbers of geospatial indexes allowed #924

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5 changes: 3 additions & 2 deletions source/core/2d.txt
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Expand Up @@ -16,7 +16,7 @@ Use a ``2d`` index if:

Do not use a ``2d`` index if your location data includes GeoJSON objects. To
index on both legacy coordinate pairs *and* GeoJSON objects, use a
:doc:`2dsphere index </core/2dsphere>`.
:doc:`2dsphere </core/2dsphere>` index.

The ``2d`` index supports calculations on a flat, Euclidean plane. The
``2d`` index also supports *distance-only* calculations on a sphere, but
Expand All @@ -30,7 +30,8 @@ criteria selects a large number of documents, the additional criteria
only filters the result set. The additional criteria *does not* result
in a more targeted query.

MongoDB allows one ``2d`` index per collection.
MongoDB allows one ``2d`` index per collection. MongoDB also allows one
:doc:`2dsphere </core/2dsphere>` index per collection.

.. important:: You cannot use a ``2d`` index as a shard key when
sharding a collection. However, you can create and maintain a
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3 changes: 3 additions & 0 deletions source/core/2dsphere.txt
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Expand Up @@ -22,6 +22,9 @@ documents. You can arrange the fields in any order.
The default datum for an earth-like sphere in MongoDB 2.4 is :term:`WGS84`.
Coordinate-axis order is **longitude, latitude**.

MongoDB allows one ``2dsphere`` index per collection. MongoDB also
allows one :doc:`2d </core/2d>` index per collection.

.. important:: You cannot use a ``2dsphere`` index as a shard key when
sharding a collection. However, you can create and maintain a
geospatial index on a sharded collection by using a different field
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