What is the planning combination of the optimal Raid level for the disks corresponding to these partitions?

In the Fusioninsight Hadoop cluster, through df-hT query on a certain node, the partitions seen include the following:

/var/log

/srv/BigData

/srv/BigData/hadoop/data5

/srv/BigData/solr/solrserver3

/srv/BigData/dbdataom

What is the planning combination of the optimal Raid level for the disks corresponding to these partitions?
A . Raid0 Raid1 Raid0 Non-Raid1
B. Raid1 Raid1 Non-Raid Non-Raid Raid1
C. Raid0 Raid0 Raid0 Raid0 Raid0
D. Non-Raid Non-Raid Non-Raid Non-Raid Raid1

View Answer

Answer: B