i found that this is a bug Bug ID *117062* Title "Sensor PS_1_Present is failing to operate!" on F700 filers

specific to F7XX there is nothing to do

it's annoying but not important ...

Scott Brynen wrote:

I've seen this on our systems as well. Let me know if you find a solution, it's quite annoying (although our F740s are essentially retired).

On Monday 27 September 2004 09:20, Stephane wrote:

...

does anyone get such message just after the os boot : << .................................................................... ....................................................................

NetApp Release 6.5.2R1: Wed Sep 8 17:00:29 PDT 2004 Copyright (c) 1992-2004 Network Appliance, Inc. Starting boot on Fri Sep 24 12:58:19 GMT 2004 Sensor PS_1_Present is failing to operate! Sensor PS_2_Present is failing to operate! ...

<normal boot>

i don't know if this is related to a bug in Ontap a problem in the mother board or a misconfiguration between 652 and old F7XX power supply (this appeared on an F740)

environment commands show no problems powersupply at the rear are ok unplugging a PS generate an alert normally