How many stack's members does support on S series switches

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1.The number of S2700EI, S2710SI, or S2750EI used to set up a stack is recommended to be 2 to 5.
2.The S2720EI has only one model, S2720-28TP-EI-AC, in V200R006C10, V200R009C00, and V200R010C00. The S2720-28TP-EI-AC cannot be upgraded to V200R011C00 and later versions. The number of S2720-28TP-EI-ACs used to set up a stack is recommended to be 2 to 5. In V200R011C10 and later versions, the number of S2720EIs used to set up a stack is recommended to be 2 to 9.
3.The number of S3700, S5700EI, S5700SI, S5700LI, S5700S-LI, S5700HI, S5710HI, S5710-C-LI, S5710-X-LI, S5710EI, or S6700EI used to set up a stack is recommended to be 2 to 5.
4.The number of S5720HI, S5730HI, S5720EI, S5720LI, S5720S-LI, S5720SI, S5720S-SI, S5720I-SI, S5730SI, S5730S-EI, S6720HI, S6720EI, S6720S-EI, S6720SI, S6720S-SI, S6720LI, or S6720S-LI used to set up a stack is recommended to be 2 to 9.

Other related questions:
How many member interfaces does an aggregation group of the switch support
An aggregation group of the switch supports a maximum of eight member interfaces. NOTE: An aggregation group of the S2700SI supports a maximum of four member interfaces.

After a stack of S series fixed switches is set up, a stack member switch restarts. Does the interface number of the switch change
If an S series fixed switch restarts after it has joined a stack, its interface number does not change. The restart does not change any configuration on the switch.

Modify the slot ID of a member switch in a stack of S series fixed switches
To modify the slot ID of a member switch in a stack of S series fixed switches, run the stack slot old-slot-id renumber new-slot-id command. The modification takes effect only after the switch restarts. When the new slot ID takes effect, the slot ID of interfaces on the switch also changes to the new slot ID. The slot ID of a switch may change when the switch belongs to a stack or the switch fails to be upgraded. You can use the following methods to change the slot ID of a switch to 0 (default value). For example, change 2/0/1 to 0/0/1. Then restart the switch to make the resetting take effect. �?(Stack card connection mode) Run the undo stack enable command in the system view to disable the stack function. �?(Service port connection mode) Run the undo stack enable command in the system view to disable the stack function. �?To specify a new slot ID again, run the stack unit-id 2 renumber 0 command in the system view.

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