Great post from Gwen Shapira over Pythian diving into the pros and cons of Hadoop appliances vs building your own Hadoop clusters. Plus a comparison of existing Hadoop appliances: Oracle Big Data Appliance, EMC Greenplum DCA, and Netapp Hadooplers.
Another good reason to roll your own is the flexibility: Appliances are called that way because they have a very specific configuration. You get a certain number of nodes, cpus, RAM and storage. Oracle’s offering is an 18 node rack. What if you want 12 nodes? or 23? tough luck. What if you want less RAM and more CPU? you are still stuck.
Original title and link: Comparing Hadoop Appliances: Oracle’s Big Data Appliance, EMC Greenplum DCA, Netapp Hadooplers ( ©myNoSQL)