how to plan the hadoop cluster

1. plan machine machine   machine_IP       software vm-01 192.168.0.221 hadoop namenode / hbase HMaster vm-02 192.168.0.222 hadoop datanode / hbase HRegionServer vm-03 192.168.0.223 hadoop datanode / hbase HRegionServer vm-04 192.168.0.224 hadoop datanode / hbase HRegionServer vm-05 192.168.0.225 hadoop datanode / hbase HRegionServer vm-06 192.168.0.226 hadoop datanode / hbase HRegionServer vm-07 192.168.0.227 hadoop datanode / hbase HRegionServer vm-08 192.168.0.228 hadoop datanode / hbase HRegionServer vm-09 192.168.0.229 zookeeper vm-10 192.168.0.230 zookeeper vm-11 192.168.0.231 zookeeper vm-12 192.168.0.232 hadoop second namenode / hbase HMaster 2.prepare software jdk1.6.0_24 hadoop-0.20.2 ssh vim rsync hbase-0.90.1 zookeeper-3.3.3 centOS 6.0 3. men suggest hadoop namenode              16G hadoop datenode              2G hadoop second namenode       16G zookeeper                    2G 4. linux(centOS 6.0) disk suggest /boot linux boot path,contail the boot program. 500M /home user data ,the remaining space / liunx root path, 5G /swap vm men 1.5 * physical men