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- UPS inventory and status, mostly within ChemIT's Baker 248 server room
- Power outage record for Monday, April 11th
- ChemIT's record of recent power outages
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Date
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Outage duration
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Cause
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Official link
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ChemIT notes
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Almost 3 hours, 5:17-8:05pm.
We did get power temporarily on for 20 minutes near the end of this interval, 7:15-7:35pm.
Some data points:
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TBD.
Note, for future reference: Early on, "NYSEG has estimated restoration around 8:15-8:30pm"
https://itservicealerts.hosting.cornell.edu/view/4655
CUAlert nofications:
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Sent: Saturday, February 4, 2017 5:46 PM
CornellALERT: ITHACA CAMPUS POWER OUTAGE
A widespread power outage is currently impacting the entire Ithaca campus and parts of the Ithaca area.
(2) Our systems only got power 20 minutes after CUAlert stated power was back:
Sent: Saturday, February 4, 2017 7:52 PM
CornellALERT: UPDATE 7:45 p.m. ITHACA CAMPUS POWER OUTAGE
Power to Cornell’s Ithaca campus has been restored.
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Michael had logged in, noted system had shut down. And was himself kicked out, indicating a second power outage during this time.
NetAdmin-L alerted potential ~10 minutes before Alert:
From: On Behalf Of Jamie Rosner Duong
Sent: Saturday, February 4, 2017 5:36 PM
To: NET-ADMIN-L
Subject: Power outage?
Are parts of Cornell experiencing a power outage?
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4/11/16 Monday
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About 40 minutes, starting shortly after noon. Official emails:
Mon, Apr 11, 2016 at 12:25 PM: CornellALERT: ITHACA CAMPUS POWER OUTAGE
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There widespread power outage is impacting the entire Ithaca campus and parts of Ithaca. Service personnel are aware of the outage and responding. Additional reports of the outage are not needed. NYSEG and Cornell Utilities personnel are working to restore power as quickly as possible
Mon, Apr 11, 2016 at 12:59 PM: CornellALERT: ITHACA CAMPUS POWER OUTAGE - UPDATE 12:48
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As of 12:48 p.m on 04/11/16 Cornell Utilities reports that the power has beeAs of 12:48 p.m on 04/11/16 Cornell Utilities reports that the power has been fully restored to the Ithaca campus.
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Sun article, quoting Melissa Hines:
http://cornellsun.com/2016/04/11/damaged-transmission-line-responsible-for-cornell-power-outage/
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2/27/2014
Thursday
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2 minutes
CU's record: Per 3/3/14 email: On Thursday 2/27/14 at 9:50am the campus experienced a disruption of electricity. The whole campus experienced an approximately 30 second outage. Many buildings on the central, west and north campus areas remained without power for 30 minutes to an hour.
Oliver's record: Power outage at 9:53a. Restored at 9:55a (more than one minute).
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Procedural error?
Per 3/3/14 email: The outage was caused as a result of routine maintenance activities which were being conducted at the Campus’ main substation which takes power from the NYSEG transmission system and provides it to campus. This work has been conducted many times before without incident but in this case caused a major disruption of electricity supply. Staff from Utilities and external technical resources are investigating the root cause of this unexpected event.
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No link to info in 3/3/14 email?
Some delayed time-stamps, from the IT folks:
http://www.it.cornell.edu/services/alert.cfm?id=3072
Initial timing info, from the power folks:
http://www.cornell.edu/cuinfo/specialconditions/#2050
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Michael led our effort to initially evaluate and restore systems, with Oliver adding to documentation and to-do's. Lulu completed the cluster restoration efforts.
Lost 1-2 hours each for Michael, Lulu, and Oliver.
Cornell called it a "power blip". In Oliver's books, any outage longer than seconds is not a "blip".
Q: Broke one GPU workstation?
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1/27/2014
Monday
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?
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http://www.it.cornell.edu/services/alert.cfm?id=3040
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2 minutes
CU's report: 08:36 AM - 8:38 AM
(ChemIT staff not in yet.)
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Procedural error?
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http://www.it.cornell.edu/services/alert.cfm?id=2982
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Terrible timing, right before the longest staff holiday of the year.
ChemIT staff not present during failure.
Lost most of the day, for Roger and Oliver.
Michael Hint and Lulu way on vacation (out of the U.S.)
Question
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7/17/13
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Half a morning (~2 hours)
CU's report: 8:45 AM - 10:45 AM
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http://www.it.cornell.edu/services/alert.cfm?id=2711
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Question: When power is initially restored, do you trust it? Or might it simply kick back off in some circumstances?
- Because we don't know the answer to this question following any specific power outage, we are reluctant to turn back on servers right away. Instead, we like to wait ~10-25 minutes.
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Procedures and reminders
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