UPSの確かめ

UPSの電源コードを抜きました
Broadcast Message from root@thaw (somewhere) at 8:56 ...
Warning power loss detected on UPS UPS_IDEN

Broadcast Message from root@thaw (somewhere) at 8:56 ...
Power failure on UPS UPS_IDEN. Running on batteries.

UPSの電源コードを電源に挿しました
Broadcast Message from root@thaw (somewhere) at 8:56 ...
Power has returned on UPS UPS_IDEN...