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Storage layout and best practices for Amazon RDS Custom for SQL Server

calendar_today October 13, 2026 person Olushola Oladipupo domain amazon-dms

Amazon RDS Custom for SQL Server gives you OS-level access, which also exposes internal storage volumes where the W: drive looks like a raw, uninitialized disk. This post explains the C:, D:, and W: drive architecture, how the drives map to Amazon EBS, and the safe disk operations and verification checks that keep you from accidentally destroying your data.

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