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List:       patchmanagement
Subject:    RE: [patchmanagement] Patching during DST
From:       Steve Yates <steve () teamITS ! com>
Date:       2017-03-31 14:10:22
Message-ID: eb3188652d7e474eadd08dc2f6e73359 () ITS-SERVER-1 ! its ! local
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	I don't think MS cares if the clock changes, I've seen time be adjusted during \
updates.  But we also tend to avoid doing things on Sunday at that time...in the US \
clocks change at 2am back or forward an hour.  So we schedule a task for 2:05 am or \
our patching window starts at 3.

--

Steve Yates
ITS, Inc.

From: Mike [mailto:craigslist4md@gmail.com] 
Sent: Thursday, March 30, 2017 7:53 PM
To: Patch Management Mailing List <patchmanagement@listserv.patchmanagement.org>
Subject: Re: [patchmanagement] Patching during DST

I've never specifically tried patching during a DST change. However, I've experienced \
tons of oddities during the clock change, from backup jobs that refuse to run on the \
next scheduled instance, to timed jobs running twice, etc. Based on that, I wouldn't \
even want to try doing patches during the DST window. In fact, I usually avoid \
starting any scheduled jobs between 1 and 3 AM so I don't forget.

On Thu, Mar 30, 2017 at 8:04 PM, Scott Elsdon [DATACOM] \
<mailto:Scott.Elsdon@datacom.co.nz> wrote: I'm going to ask a weird one here, to see \
if anyone has had previous experience.

Its DST change here in NZ this weekend.  So on Sunday morning at 0300 the
clocks go back one hour to 0200.  Part of going into winter.

A few years ago we experienced a 3rd party who patched traditionally early
hours Sunday morning.

The clocks changing caused issues on some of the database system recording
timings, and it took around a week to perform recovery.


So the question is.  Has anyone had bad experience with patching 300+ servers
from midnight to 6am  on a night when DST occurred, specifically going
backwards ?



S



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