DOCS-693 review edits

Author: Bob Grabar

source/faq/storage.txt

@@ -123,7 +123,7 @@ inserted into the database. This is caused by the following:
   compared to the database and is insignificant.
 
   On UNIX, :program:`mongod` preallocates an additional data file
-  and initializes the disk space ``0``.  Preallocating data files in the background prevents
+  and initializes the disk space to ``0``.  Preallocating data files in the background prevents
   significant delays when a new database file is next allocated.
 
   You can disable preallocation with the :option:`--noprealloc <mongod
@@ -149,14 +149,9 @@ inserted into the database. This is caused by the following:
 
 - The :term:`journal`
 
-  The data directory contains the journal, which stores write operations
-  on disk prior to MongoDB applying them to databases. As MongoDB
-  applies write operations to databases, it removes the operations from
-  the journal. By default, MongoDB applies the write operations every 60
-  seconds. Journal files hold 1 gigabyte of data each. If a file fills
-  up, MongoDB creates a new one. Unless you write *many* bytes of data
-  per-second, the journal directory should contain only two or three
-  journal files.
+  The data directory contains the journal files, which store write
+  operations on disk prior to MongoDB applying them to databases. See
+  :doc:`/administration/journaling`.
 
 - Empty blocks