Hot-Swap Units In A Stack - Dell Z9000 Installing

Ensure that the power source is turned off. Do not attach the DC cable to the DC connectors while
2
the power source is on.
Attach the connectors to the PSUs, making sure that the connections are secure.
3
Replace the plastic cover over the DC connectors.
4
As soon as the cable is connected between the Z9000 and the power source, the chassis is powered-up;
there is no on/off switch.

Hot-swap units in a stack

[Not supported in Beta]
You can add, remove, or swap units in an existing stack. The units in the stack and the new units can be
already powered up or they can be powered down.
All units in a stack must run the same version of the operating system. If you attempt to attach a unit with
a different version of the operating system to an existing stack, the CLI will display an error, and the unit
will not be added until you install compatible software.
The order in which the units come on-line or are added to or removed from the stack can affect how the
stack identifies them, and how the units identify themselves, influencing unit numbers, management
addresses, and other elements of the configuration file.
Unit identification within the stack is determined by the selected identification algorithm. The default
algorithm has the units self-identify as Unit 0 through Unit last based on the order in which they come
on-line. So, when setting up a new set of switches in a stack, you should have no trouble forcing the
identification of the management unit and unit IDs by methodically supplying power to the units in your
preferred sequence.
Similarly, when you add a new unit to the stack, the unit will be gracefully added as Unit last (the lowest
unused number) with the current configuration. Attaching a new unit may cause each unit in the stack to
reload, and the subsequent configuration file in each unit includes the awareness of the new unit.
If you have a pre-configured unit that you want to add to the stack, but you want to make sure that the
configuration does not override the configuration of the stack, it is best to add the unit while it is powered
down, in order to avoid stack management conflicts.
For details on removing a unit from a stack and other stacking commands, see the Stacking chapter in the
Z9000 FTOS Configuration Guide and the Stacking Commands chapter in the Z9000 FTOS Command
Reference
Install the Z9000 | 23