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assigned to a Logical Drive or Host Drive, it will be displayed in the list of Disk Drive Posi-
tions.
There are two cases which make this function very interesting:
1. An existing hard disk should be given 100% redundancy, but there is no time to shut
down the system and interrupt the normal operation
2. An existing hard disk has a high probability of failure, because it makes, for example, a
strange noise or generates a lot of grown defects, but there is no time to shut down the sys-
tem and interrupt the normal operation.
Once the new hard disk is added, the data synchronization (mirroring update) is automati-
cally carried out in the background simultaneously with the normal operation.
In this example, there was already a spare hard disk available (on Channel B, SCSI ID 3).
This drive must not be a Logical Drive. Otherwise it will not be available for this function.
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