Thecus N8900 series User Manual page 94

With the added stack target you can "Enable" or "Disable" the stack target now or
later depending on usage required.
Next, input the target IP address of the stackable device and click the Discovery
button. The system will list available target volumes from the inputted IP address.
Once the volume IP has been set, you may need to input a valid user name and
password to validate your access rights. If there is no user name and password
needed to access target volume, then leave it blank.
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