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SHR - if parity drive fails what happens

#2
Yes, this is a popular question. People wonder what happens when a drive fails.
When a drive fails, the led light will change from green to red to indicate which drive is broken. This allows you to swap it out easily. You will also see a notification in the admin panel about the failing drive.
With a broken drive, you can still access your data as if nothing happened. Sometimes you might notice slightly slower speeds because the system needs to write to fewer drives at the same time. But this might not be noticeable.

What happens if the biggest drive fails?
Usually, you would have a pair of same-capacity drives. This way if one of the biggest drives fail, the other one will ensure you can still access your data.
If you happen to add a single drive that is bigger than other drives, the system will see it as big as the other drives. So if you have 3X 4TB drives and the 4th one is 8TB drive. The biggest drive will be treated as 4TB drive. You can not fill it up beyond 4TB mark. When you add a second 8TB drive, you will gain an extra 4TB of storage space that was locked out.

You can play with this here https://www.synology.com/en-uk/support/R...TB|10%20TB



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RE: SHR - if parity drive fails what happens - by ed - 11-06-2022, 08:29 PM

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