Interview Pro Tip
Red Flag: Saying you'd use Azure IR for on-prem sources—shows no hybrid experience. Pro-Move: 'We ran SHIR on a 4-vCPU VM, staged to Blob, and used PolyBase for Synapse—500GB in 4 hours at $0.02/GB egress.'
Why it matters: On-prem to cloud bulk transfer is a common hybrid pattern; poor design causes WAN bottlenecks, cost overruns, and failed SLAs. Architectural logic: Use SHIR as a bridge—it runs in your network, so latency stays within the LAN for the source leg. Azure IR cannot reach on-prem; SHIR is mandatory. Scalability trade-offs: parallelCopies (default 4, max 256 for cloud, hardware-limited for SHIR) multiplied by DIUs drives throughput....
The complete answer continues with detailed implementation patterns, architectural trade-offs, and production-grade considerations. It covers performance optimization strategies, common pitfalls to avoid, and real-world examples from companies like Presidio. The answer also includes follow-up discussion points that interviewers commonly explore.
Continue Reading the Full Answer
Unlock the complete expert answer with code examples, trade-offs, and pro tips - plus 1,863+ more.
Or upgrade to Platform Pro - $39
Engineers who used these answers got offers at
AmazonDatabricksSnowflakeGoogleMeta
According to DataEngPrep.tech, this is one of the most frequently asked Cloud/Tools interview questions, reported at 1 company. DataEngPrep.tech maintains a curated database of 1,863+ real data engineering interview questions across 7 categories, verified by industry professionals.