Replacing secondary power supply WS-C3750X-24P

[ziqex]

Hello,

We would like replace 2nd power supply in one of the core switches ( WS-C3750X-24P-S).

My question is whether the secondary power supply can be replace without turning off the device. Please let me know. Thank you.

SW PID Serial# Status Sys Pwr PoE Pwr Watts
--- ------------------ ---------- --------------- ------- ------- -----
1A C3KX-PWR-715WAC  OK Good Good 715/0
1B C3KX-PWR-715WAC No Input Power Bad N/A 715/0

#sh inve
NAME: "1", DESCR: "WS-C3750X-24P"
PID: WS-C3750X-24P-S , VID: V04 , SN: 

NAME: "Switch 1 - Power Supply 0", DESCR: "FRU Power Supply"
PID: C3KX-PWR-715WAC , VID: V02D ,

NAME: "Switch 1 - Power Supply 1", DESCR: "FRU Power Supply"
PID: C3KX-PWR-715WAC , VID: V02D ,

I assume that the device don't need to be powered down, as device is in powerstack mode and have enough unused power. 

Power Stack Stack Stack Total Rsvd Alloc Unused Num Num
Name Mode Topolgy Pwr(W) Pwr(W) Pwr(W) Pwr(W) SW PS
-------------------- ------ ------- ------ ------ ------ ------ --- ---
Powerstack-1 SP-PS Stndaln 715 45 190 480 1 1

Thank you.

Regards,

Daniel

[Seb Rupik · Accepted solution]

Hi there,

Yes it is hot-swappable.

From the hardware install guide:

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/hardware/installation/guide/3750x_3560x_HIG/HIGFRU.html#wp1210345

The power supply is hot-swappable. In some configurations, such as full PoE+ or power sharing mode, removing a power supply causes powered devices to shut down until the power budget matches the input power of a single power supply.

cheers,

Seb.

[Leo Laohoo]

Yes. This can be done.
NOTE: I've done it many times without any issues.