The Dell PowerStore Sizer tool requires key performance indicators to characterize a workload for accurate system sizing. Throughput (MB/s) is a primary input that defines the required data transfer rate, essential for bandwidth-intensive operations like backups or analytics. Response Time (ms) is another critical input, specifying the latency tolerance for I/O requests, which is vital for transactional applications like databases. Sizer uses these user-defined values, along with IOPS and I/O profile, to model the workload's demands and ensure the proposed configuration can meet the required performance service levels.

B. Frontend Performance Saturation: This is a calculated output metric in Sizer that indicates the projected load on the system's front-end components, not a workload input parameter.

D. Storage Performance Saturation: This is an output metric from the Sizer tool that shows the projected utilization of backend storage resources, not an input to define workload performance.

1. Dell PowerStore: Sizing Guide (Internal Dell Technologies & Partner Document). The "Workload Entry" section for creating custom workloads explicitly lists "Throughput (MB/s)" and "Response Time (ms)" as fundamental input parameters required to define the performance characteristics of the application being sized.

2. Dell PowerStore: Best Practices Guide, Page 8, Section "Performance". This document emphasizes understanding application workload characteristics, stating, "Key metrics to understand for each application workload include IOPS, throughput, and latency (response time) requirements." This confirms that Throughput and Response Time are primary metrics used to define and size for a workload. The Sizer tool is built upon these fundamental principles.