PROFESSIONAL-DATA-ENGINEER · Question #124
Which of the following is NOT a valid use case to select HDD (hard disk drives) as the storage for Google Cloud Bigtable?
The correct answer is C. You need to integrate with Google BigQuery. Explanation/Reference: For example, if you plan to store extensive historical data for a large number of remote-sensing devices and then use the data to generate daily reports, the cost savings for HDD storage may justify the performance tradeoff. On the other hand, if you plan…
Question
Options
- AYou expect to store at least 10 TB of data.
- BYou will mostly run batch workloads with scans and writes, rather than frequently executing random reads of a small number of rows.
- CYou need to integrate with Google BigQuery.
- DYou will not use the data to back a user-facing or latency-sensitive application.
How the community answered
(41 responses)- A10% (4)
- B5% (2)
- C83% (34)
- D2% (1)
Explanation
Explanation/Reference: For example, if you plan to store extensive historical data for a large number of remote-sensing devices and then use the data to generate daily reports, the cost savings for HDD storage may justify the performance tradeoff. On the other hand, if you plan to use the data to display a real-time dashboard, it probably would not make sense to use HDD storage--reads would be much more frequent in this case, and reads are much slower with HDD storage.
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