RAID administration

Checkmk Manual
Last updated: April 4 2019

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If one of the hard drives fails, the data will continue to be available on the second one.

1. Administration in web interface

You can view the state of the RAID in the web interface of your device. To do this, select the item RAID setup in the main menu of the web interface. This screen also gives you the option to repair the RAID if necessary.

2. Exchanging a defective hard drive

If a hard drive is detected as being defective, this will be displayed in the web interface with defective. On the actual device, depending on the nature of the error, this will be shown by a blue flashing LED at the hard drive bay.

Moving the small lever on the left-hand side of the bay will unlock the fixing mechanism, enabling you to pull the frame out of the housing together with the hard drive. You can now loosen the screws on the underside of the frame and remove the defective hard drive. Now mount the new hard drive into the frame and push the frame back into the free bay of the device.

If the device is switched on while you are exchanging the hard drive, the RAID rebuild will start automatically. You can view the progress in the web interface.

Failsafe operation is only restored once the RAID has been completely repaired.

The hard drive must be at least the same size as the RAID itself. You can verify this in the RAID status view.

3. Both hard drives defective

If the device detects that both hard drives are defective or have been removed from the device, a restart is automatically triggered.