Understanding raid 1 checksum and fixing it is of great importance, especially if you are using RAID 1 on your Windows machine.
Or, at least you should, as RAID 1 provides superior redundancy and protection compared to RAID 0.
However, in RAID 1, the parity information is calculated and stored on disk, which adds overhead to the system.
Consequently, the parity information added to the disk is prone to corruption, and this can lead to system or data loss.
In today’s guide, we will explore three RAID 1 checksum repair methods.
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Make new Checksum
- The RAID 1 checksum problem can be resolved by making a new checksum.
- In RAID 1, the parity data is distributed across all disks to ensure data integrity.
- A RAID 1 has 2 parts, a parity disk and data disks.
- Failing disks can be replaced without any data loss.
- For a faulty disk to be repaired, the parity disk must be changed.
- If the parity disk is changed, a new parity disk is created.
- The RAID 1 disk array is then rebuilt with the new parity disk.
Check your HDD hardware
- RAID 1 is a data redundancy scheme, thus RAID 1 requires at least three HDDs. If you only have one HDD, then you cannot create a RAID 1 spanned volume.
- In Windows, right-click on your drive and select Properties.
- Navigate to the Tools tab and open the Error Checking tab.
- Select the Check now button under Scan for and attempt recovery of bad sectors.
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Check your RAID configuration
- Make sure you have the raid 1 configuration.
- In this case, check the status of the parity by switching the raid 1 configuration.
- In Raid 1 configuration, if the parity is enabled, it’ll show as “enabled”, otherwise, it’ll show as “disabled”.
- Check ECC status
In case of parity enabled, check for ECC status.
- If the ECC is enabled, it will show as “enabled”, otherwise, it will show as “disabled”.
- Check parity error
In the raid 1 configuration, if the parity is enabled, check for parity error.
- If the parity is enabled and shows “error”, then it means the parity is not working properly.
- Check parity error status
In raid 1 configuration, if the parity is enabled, the parity error status should be “0”.
- If parity error status shows “1”, then that means parity is not working properly.
- Check parity error summary
In the raid 1 configuration, if the parity is enabled, the parity error summary should be “0”.
- If parity error summary shows “1”, then that means parity is not working properly.
Check your HDDs
- Raid 0 makes use of HDDs to store data. If the HDDs don’t have enough space, then users may not be able to fix errors.
- To check the HDDs, right-click Start and select Devices and Printers.
- Select Add a device to open this window showing your connected hardware.
- Right-click a drive to select Properties.
- Select the Tools tab, and then click on Error Checking.
- Select the Check Now button.
Run the CHKDSK
- To run CHKDSK, open the Command prompt as administrator.
- Write in the following command in the Command prompt and press Enter: sfc /scannow
- Wait until the process ends.
Create a new Virtual Disk
- Start Hyper-V.
- Right-click the Hyper-V Manager icon and choose New from the context menu.
- Choose the Virtual Hard Disk option.
- Next, add two empty hard drives to the virtual disk.
- Now, right click the Virtual Hard Disk and choose Edit Settings.
- Go to the Advanced tab and turn on the Enable Virtual Hard Drive Debugging option.
- Finally, screen the Virtual Hard Drive Properties, scroll to the bottom, and check the Use hardware checksum option.