Answer-first summary for fast verification
Answer: Memcache backed by Cloud Datastore for the customer session state data. Lifecycle-managed Cloud Storage for log archives, thumbnails, and VM boot/data volumes.
Option B is the correct answer. The reason is that it provides a cost-effective and suitable storage allocation for all the identified workloads. Specifically, using Memcache backed by Cloud Datastore for customer session state data ensures that the data is available even if customers are offline for several days. Lifecycle-managed Cloud Storage is appropriate for log archives and image thumbnails since these types of data do not require low latency and can be stored economically. Additionally, VM boot/data volumes can be handled by creating custom images in Cloud Storage. This configuration balances performance and cost, making it the most effective solution among the options provided.
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As a Google Cloud Architect, you have been engaged by your client to lead the migration of their application infrastructure to Google Cloud Platform (GCP). The client is currently facing an issue where their on-premises high-performance Storage Area Network (SAN) requires frequent and expensive upgrades to keep up with their diverse workloads. The workloads are as follows: 20 TB of log archives that must be retained for legal reasons; 500 GB of VM boot/data volumes and templates; 500 GB of image thumbnails; and 200 GB of customer session state data, which needs to allow customers to restart sessions even if they are offline for several days. Which of the following best reflects your recommendations for a cost-effective storage allocation in GCP?
A
Local SSD for customer session state data. Lifecycle-managed Cloud Storage for log archives, thumbnails, and VM boot/data volumes.
B
Memcache backed by Cloud Datastore for the customer session state data. Lifecycle-managed Cloud Storage for log archives, thumbnails, and VM boot/data volumes.
C
Memcache backed by Cloud SQL for customer session state data. Assorted local SSD-backed instances for VM boot/data volumes. Cloud Storage for log archives and thumbnails.
D
Memcache backed by Persistent Disk SSD storage for customer session state data. Assorted local SSD-backed instances for VM boot/data volumes. Cloud Storage for log archives and thumbnails.