Administrator Guide

-- Power Supplies --
Unit Bay Status Type FanStatus FanSpeed(rpm)
---------------------------------------------------------------------------
1 1 up AC up 7888
1 2 down UNKNOWN absent NA
2 1 up AC up NA
2 2 absent absent NA
4 1 absent absent 0
4 2 up AC up 7888
-- Fan Status --
Unit Bay TrayStatus Fan1 Speed Fan2 Speed
------------------------------------------------------------------------------------
1 1 up up 7164 up 7058
2 1 up up 6956 up 7058
4 1 up up 7058 up 7164
Speed in RPM
Dell#
Adding a Congured Unit to an Existing Stack
To add a congured unit to an existing stack, use the following commands.
If a stack unit goes down and is removed from the stack, the logical provisioning congured for that stack-unit number is saved on the
master and standby units. When a new unit is added to the stack, if a stack group conguration conict occurs between the new unit and
the provisioned stack unit, the conguration of the new unit takes precedence.
1 Add the congured unit to the top or bottom of the stack.
2 Power on the switch.
3 Attach cables to connect ports on the added switch to one or more existing switches in the stack.
Dell EMC Networking OS automatically assigns a number to the new unit and adds it as member switch in the stack. The new unit
synchronizes its running and startup congurations with the stack.
Dell EMC Networking OS Behavior: When you add a switch to a stack
• If you congure the new unit with a stack number that is already assigned to a stack member, the stack avoids a numbering conict by
assigning the new switch the rst available stack number.
• If the stack has been provisioned for the stack number that is assigned to the new unit, the pre-congured provisioning must match
the switch type. If there is a conict between the provisioned switch type and the new unit, a mismatch error message is displayed.
Merge Two Stacks
You may merge two stacks while they are powered and online.
To merge two stacks, connect one stack to the other using the mini-SAS cables from the stacking ports.
• Dell EMC Networking OS selects a master stack manager from the two existing managers based on the priority of the stack.
• Dell EMC Networking OS resets all the units in the losing stack; they all become stack members.
• If there is no unit numbering conict, the stack members retain their previous unit numbers. Otherwise, the stack manager assigns new
unit numbers, based on the order that they come online.
• The stack manager overwrites the startup and running cong on the losing stack members with its own to synchronize the
conguration on the new stack members.
904
Stacking