Mention battery-backed cache under hardware selection options.

doc/FAQ

 
                 Frequently Asked Questions (FAQ) for PostgreSQL
                                        
-   Last updated: Fri Aug 22 21:55:19 EDT 2008
+   Last updated: Tue Sep 23 16:19:49 EDT 2008
    
    Current maintainer: Bruce Momjian (bruce@momjian.us)
    
@@ -472,8 +472,9 @@
    quality motherboards are more reliable and have better performance
    than less expensive hardware. PostgreSQL will run on almost any
    hardware, but if reliability and performance are important it is wise
-   to research your hardware options thoroughly. Our email lists can be
-   used to discuss hardware options and tradeoffs.
+   to research your hardware options thoroughly. A disk controller with a
+   battery-backed cache is also useful. Our email lists can be used to
+   discuss hardware options and tradeoffs.
      _________________________________________________________________
    
                            Operational Questions

doc/src/FAQ/FAQ.html

@@ -10,7 +10,7 @@
   alink="#0000ff">
     <H1>Frequently Asked Questions (FAQ) for PostgreSQL</H1>
 
-    <P>Last updated: Fri Aug 22 21:55:19 EDT 2008</P>
+    <P>Last updated: Tue Sep 23 16:19:49 EDT 2008</P>
 
     <P>Current maintainer: Bruce Momjian (<A href=
     "mailto:bruce@momjian.us">bruce@momjian.us</A>)
@@ -632,7 +632,8 @@
     quality motherboards are more reliable and have better performance than
     less expensive hardware.  PostgreSQL will run on almost any hardware,
     but if reliability and performance are important it is wise to
-    research your hardware options thoroughly.  Our email lists can be used
+    research your hardware options thoroughly.  A disk controller with a
+    battery-backed cache is also useful.  Our email lists can be used
     to discuss hardware options and tradeoffs.</P>
   
     <HR>