Explanation
The technical architect should recommend enabling data reduction storage service when the system has free capacity above 80%. Data reduction technologies such as compression and deduplication reduce the amount of storage needed by eliminating duplicates and compressing data. However, these technologies can consume additional resources, particularly CPU. Enabling data reduction on a system that is already running low on free capacity would create additional resource contention and negatively impact performance.

Explanation
Choosing the highest capacity flash drives when designing a Dell Unity XT All-Flash system can provide several benefits, including lower physical space, power and cooling requirements. Additionally, higher capacity drives can also improve system boot time, reduce maintenance and rebuild time, and decrease wear-leveling, performance, and redundancy requirements.