Answer
TempDB handles:
- Sorts
- Hash operations
- Version store
- Spills
- Temporary objects
Slow TempDB I/O becomes a bottleneck for the entire SQL Server instance.
Quick Answer
TempDB is heavily used for sort spills, hash join overflows, and temp table operations. Slow TempDB I/O directly slows every query that spills. NVMe SSDs for TempDB are a standard recommendation. Separating TempDB from data/log files on dedicated drives avoids I/O contention between user queries and TempDB operations.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ