Our data center folks insist on dual power feeds for everything, sometimes infuriatingly so. To test power redundancy, they occasionally drop one power feed or the other--with ample heads up--and check that all devices are functioning. Other than call-home events, we have not had any surprises so far.
Testing for a full power outage (both sides) is a lot harder, but it has been done here a few times. . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-543-6132 Office ⇐=== NEW robin...@sce.com -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Mike Beer Sent: Wednesday, March 01, 2017 5:45 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: (External):Re: Check out Massive Amazon cloud service outage disrupts sites >Ah, probably happened when the floor maintenance technician (janitor inold-speak) repurposed a electrical outlet. Usually large datacenters test their emergency procedures (at least once a year) - unfortunately the redundant power supply does not always work. And some servers might not resume work automatically... Mike ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
