You are planning a Hadoop duster, and you expect to be receiving just under 1TB of data per
week which will be stored on the cluster, using Hadoop’s default replication. You decide that your
slave nodes will be configured with 4 x 1TB disks.
Calculate how many slave nodes you need to deploy at a minimum to store one year’s worth of
data.

A.
100 slave nodes

B.
100 slave nodes

C.
10 slave nodes

D.
50 slave nodes

Explanation:
Total number available space required: 52 (weeks) * 1 (disk space per week) * 3
(default replication factor) = 156 TB
Minimum number of slave nodes required: 156 /4 = 39