config.xml

...
<ServerList>
  <!-- FIO config with 2 servers -->
  <!-- Each server will be responsible for 8 bucket -->
  <Name>fio</Name>
  <Policy>hash</Policy>
  <Servers name="fio1">
    <Addr>{addr1}</Addr>
    <Bucket>0 1 2 3 4 5 6 7</Bucket>
    <Proto>beansdb</Proto>
  </Servers>
  <Servers name="fio4">
    <Addr>{addr4}</Addr>
    <Bucket>8 9 A B C D E F</Bucket>
    <Proto>beansdb</Proto>
  </Servers>
</ServerList>

<ServerList>
  <!-- Memcached server -->
  <Name>mem</Name>
  <Policy>rnwn</Policy>
  <Servers name="mem1">
    <Addr>{addr1}</Addr>
    <Proto>memc</Proto>
    <QueueTimeout>150</QueueTimeout>
    <MaxConns>60</MaxConns>
  </Servers>
</ServerList>

<ServerList>
  <!-- HD server groups with 4 server. RNW1 policy -->
  <!-- Writing to hd4 but reading from all -->
  <Name>hd-rnw1</Name>
  <Policy>rnw1</Policy>
  <Servers name="hd1">
    <Addr>{addr1}</Addr>
    <Proto>beansdb</Proto>
    <QueueTimeout>400</QueueTimeout>
    <MaxConns>10</MaxConns>
  </Servers>
  <Servers name="hd2">
    <Addr>{addr2}</Addr>
    <Proto>beansdb</Proto>
    <QueueTimeout>400</QueueTimeout>
    <MaxConns>10</MaxConns>
  </Servers>
  <Servers name="hd3">
    <Addr>{addr3}</Addr>
    <Proto>beansdb</Proto>
    <QueueTimeout>400</QueueTimeout>
    <MaxConns>10</MaxConns>
  </Servers>
  <Servers name="hd4">
    <Addr>{addr4}</Addr>
    <Proto>beansdb</Proto>
    <QueueTimeout>400</QueueTimeout>
    <MaxConns>10</MaxConns>
  </Servers>
  <WServers name="hd4">
    <Addr>{addr4}</Addr>
    <Proto>beansdb</Proto>
    <QueueTimeout>400</QueueTimeout>
    <MaxConns>10</MaxConns>
  </WServers>
</ServerList>

<ServerList>
  <!-- HD server groups with 4 server. RNWN policy -->
  <!-- Writing to all. Reading from all -->
  <Name>hd-rnwn</Name>
  <Policy>rnwn</Policy>
  <!-- hd1 is responsible for bucket [0-3] -->
  <Servers name="hd1">
    <Addr>{addr1}</Addr>
    <Proto>beansdb</Proto>
    <QueueTimeout>400</QueueTimeout>
    <MaxConns>10</MaxConns>
  </Servers>
  <!-- hd2 is responsible for bucket [4-7] -->
  <Servers name="hd2">
    <Addr>{addr2}</Addr>
    <Proto>beansdb</Proto>
    <QueueTimeout>400</QueueTimeout>
    <MaxConns>10</MaxConns>
  </Servers>
  <!-- hd3 is responsible for bucket [8-B] -->
  <Servers name="hd3">
    <Addr>{addr3}</Addr>
    <Proto>beansdb</Proto>
    <QueueTimeout>400</QueueTimeout>
    <MaxConns>10</MaxConns>
  </Servers>
  <!-- hd4 is responsible for bucket [C-F] -->
  <Servers name="hd4">
    <Addr>{addr4}</Addr>
    <Proto>beansdb</Proto>
    <QueueTimeout>400</QueueTimeout>
    <MaxConns>10</MaxConns>
  </Servers>
</ServerList>


<PolicyList>
  <App>1</App>
  <From>1</From>
  <!-- App 1 from 1 will use FIO and memcache and RNW1 HD groups -->
  <FioName>fio</FioName>
  <MemName>mem</MemName>
  <HdName>hd-rnw1</HdName>

  <ToCache>2</ToCache>
  <TnToCache>2</TnToCache>
  <MemCacheExp>1</MemCacheExp>
  <TnMemCacheExp>1</TnMemCacheExp>
  <MaxToMemSize>4096000</MaxToMemSize>
</PolicyList>

<PolicyList>
  <App>1</App>
  <From>2</From>
  <!-- App 1 from 2 will use FIO and memcache and RNWN HD groups -->
  <FioName>fio</FioName>
  <MemName>mem</MemName>
  <HdName>hd-rnwn</HdName>

  <ToCache>2</ToCache>
  <TnToCache>2</TnToCache>
  <MemCacheExp>1</MemCacheExp>
  <TnMemCacheExp>1</TnMemCacheExp>
  <MaxToMemSize>4096000</MaxToMemSize>
</PolicyList>
...