Exam D-MSS-DS-23 topic 1 question 47 discussion

Dell EMC’s official guidance confirms that the PowerStore sizing tool uses a default Data Reduction Ratio (DRR) of 4:1 for block workloads and 2:1 for file workloads. This means that for block workloads, the tool assumes that data will be reduced to one‐quarter of its raw capacity (a 4:1 reduction), and for file workloads it assumes a 2:1 reduction. For example, Dell EMC’s PowerStore Sizing Tool documentation (referenced in training materials and exam discussions such as those found on Dell-related study resources) states these default DRR values as the baseline input parameters for estimating effective capacity. You can validate this information in Dell EMC’s PowerStore sizing documentation.