what is you recommendation about disks for Hadoop? Do you recommend using SAS, or just attaching disk over SATA? Or maybe something else? What are pros and cons of every option? (Decision about disk ...
I would like to know about your strategies on what to do when one of the Hadoop server disk fails. Let's say, I have multiple (>15) Hadoop servers and 1 namenode, and one from 6 disks on slaves ...