POE交换机断电后 大面积AP镜像丢失 是什么情况造成的

机房断电后 再次通电 AP就丢失镜像 需要用FTP导入。 

这个是什么原因造成的，有没有快速解决的方法 100多台AP一台一台导入太麻烦了

 **************************************************************************** * * * H3C WA4320-ACN-SI BootWare, Version 7.21 * * * **************************************************************************** Copyright (c) 2004-2020 New H3C Technologies Co., Ltd. Compiled Date : Oct 16 2020 CPU Type : ATHEROS AR9563 CPU L1 Cache : 32KB CPU Clock Speed : 775MHz Memory Type : SDRAM Memory Size : 128MB Memory Speed : 560MHz BootWare Size : 512KB Flash Size : 16MB PCB Version : Ver.B BootWare Validating... Press Ctrl+B to access EXTENDED-BOOTWARE MENU... Loading the main boot and system image files... Loading file flash:/wa4300s-system.bin...................................... ............................................................................ ............................................................................ .................................................................Done. Image file flash:/wa4300s-system.bin is invalid! Loading the backup boot and system image files... The image does not exist! Booting image fails! Trying to get the IP address from the DHCP server...... DHCP server's IP address is 10.162.227.1 Client's assigned address is 10.162.227.252 DNS domain name got from DHCP server is DNS server's IP address is 10.160.0.5 Default Gateway's IP address is 10.162.227.1 This client's subnet mask is 255.255.255.0 The length of option 43 is: 29 Change State : Idle to Broadcast Discovery