A cloud architect is designing a distributed block storage solution that will support application HA. The solution will consist of 10 nodes with all SSD devices and 10 nodes with all SAS devices.
There are five racks available in the data center. Each rack has a single top-of-rack access layer switch with sufficient bandwidth to the aggregate layer. Each node will have multiple connections to the local top-of-rack switch.
The architect wants to provide a design that has the fewest number of storage pools while maximizing the number of fault domains. How should the storage pools be designed?
A. One pool with all SSD nodes located in one rack
One pool with all SAS nodes located in a different rack
B. One pool with 50% SSD and 50% SAS nodes located in one rack
One pool with 50% SSD and 50% SAS nodes located in a different rack
C. One pool with all SSD nodes distributed equally across five racks
One pool with all SAS nodes distributed equally across five racks
D. One pool with 50% SSD and 50% SAS nodes distributed equally across five racks
Answer: C