QNAP HS-251 Hardware User Manual

Also see for HS-210: Hardware user manual Software user manual Hardware user manual Hardware user manual Hardware user manual

Contents

QNAP HS-251 Hardware User Manual Manual pdf 62 page image

623. Insert a new power supply unit and push it to the end.4. Turn on the NAS.Warning: The NAS supports replacing the redundant power supply unit withoutturning off the server when redundant power supply mode is enabled. However, users arestrongly recommended to turn OFF the NAS before replacing the power supply unit toreduce the risk of electric shock.A second power supply unit can be installed on a single power (SP) rackmount NAS modelto upgrade the SP model to redundant power (RP) model.10.3 2U/3U Turbo NAS (TS-853U-RP, TS-1253U-RP, TS-1279U-RP,TS-EC1279U-RP, TS-1679U-RP, and TS-EC1679U-RP only)Note: The following instructions should only be performed by an authorized and trainedtechnician.To replace a failed power supply unit on the TS-1279U-RP, TS-EC1279U-RP, TS-1679U-RPor TS-EC1679U-RP Turbo NAS, follow the steps below.1. Turn off the NAS.