How to Configure RAID 1 ( Mirroring ) in Windows 11/10/8/7

What is RAID-1

RAID-1 (Redundant Array of Independent Disks – Level 1) is one of the popular RAID configurations in data storage systems.

RAID-1 operates by synchronously copying data between two hard drives or storage devices. Each time data is written to one drive, it is also written to the other drive, creating a complete and synchronous duplicate. This ensures that if one drive fails, the data remains safe on the other drive.


  • Two hard drives or storage devices with equal capacity.
  • Hardware or software support for RAID-1.


  • Data Protection: Data is copied in parallel, protecting it from loss due to hardware failure.
  • Reliability: RAID-1 provides high reliability with the ability to recover data if one drive fails.
  • Good Read Performance: Improves read performance by allowing reading from both drives simultaneously.
  • Easy Data Recovery: When one drive fails, data can still be easily recovered from the remaining drive.


  • Cost: RAID-1 requires at least two drives, increasing costs compared to using a single drive.
  • Limited Write Performance: Write performance may be reduced as all data must be written simultaneously to both drives.
  • No Increase in Storage Capacity: The storage capacity used in RAID-1 is only equivalent to that of a single drive because data is copied synchronously.

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Step by step Configure RAID-1 on Windows

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