Date: Mon, 28 Sep 2015 17:23:08 +0200 From: Jonathan McKeown <jonathan@scatterlings.org> To: Bob Healey <healer@rpi.edu> Cc: freebsd-questions@freebsd.org Subject: Downtime (was Re: Problems with ZFS file servers) Message-ID: <CAOLAi30eaVbjjcG%2B7FhD%2B6TWm%2BUbx-Q=pWJCX%2BRAzWJkQxmOkQ@mail.gmail.com> In-Reply-To: <CAOLAi30uEAptdJ9ouEZbJJmgc0X1spSLnWH5qpjM1FEQy-6ZEw@mail.gmail.com> References: <CAOLAi33P7Ld7-kSbnxkf6VFAESeVJLWVtaSvMEGDt=PYiTZ5%2Bg@mail.gmail.com> <CAOLAi31JfOYjKrAUWcvQsO6RnLjyYTPwEUd9v3=AB4JT8b2WRg@mail.gmail.com> <CAOLAi30ZJp%2B=eLRDB63VQtC2TznQZG1Rf1J6Bj=GgZBHNSbb%2BQ@mail.gmail.com> <CAOLAi32Cca4ASf99oDkrubkMjTycaP_Bhq2H_UgNq6swmf0Tvg@mail.gmail.com> <CAOLAi30uEAptdJ9ouEZbJJmgc0X1spSLnWH5qpjM1FEQy-6ZEw@mail.gmail.com>
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So your employers prefer unplanned downtime to scheduled maintenance? That, IMHO, is.... unwise. Here's an alternative take. I also worked as a sysadmin in academia (until being medically boarded with chronic illness). We have a 14-hour Major Maintenance Window from 17h30 through to 07h30 on the next morning on the 1st working Tuesday in January, and 1st Tuesday of each other month - which is non-negotiable - and a minor maint window for the same times on all remaining Tuesdays, which can be rescheduled. Not all the windows (nor all the hours in each window) are used but everyone knows they might be and plans accordingly (and a few days' advance warning is given of maintenance, with estimated outage times and durations).
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