How To rebuild a RAID 1 array, you typically replace a failed disk with a new one and then initiate the rebuild process. Here’s a general guide:
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Identify the Failed Drive: Most RAID controllers or software utilities will indicate which drive has failed. It’s important to make sure you’re replacing the correct drive
Replace the Failed Drive: Power down your system and physically replace the failed drive with a new one of equal or greater capacity. Make sure the replacement drive is compatible with your RAID controller or setup.
Boot Up: After replacing the drive, boot up your system. The RAID controller or software should recognize the new drive as a member of the RAID array but will typically mark it as ‘degraded’ until the rebuild is complete.
Replaced faulty hard drive and rebuilding will start automatically.
Initiate Rebuild: Depending on your RAID controller or software, you may need to initiate the rebuild process manually or it may start automatically. Check your RAID management interface or software for options to start the rebuild.
Monitor Progress: During the rebuild process, monitor the progress to ensure everything is proceeding as expected. This process can take some time, depending on the size of the drives and the amount of data
Completion: Once the rebuild is complete, the RAID array should return to a healthy state, and the new drive should be fully integrated into the array.
Verify: After the rebuild is complete, it’s a good idea to run some tests or verify the integrity of your data to ensure everything is functioning as expected.
Consider Backup: While RAID provides redundancy, it’s not a substitute for regular backups. Take this opportunity to review your backup strategy and ensure your data is adequately protected.