Should Servers Be Rebooted?
Oct 21, 2010, 22:02 (19 Talkback[s])
(Other stories by Scott Alan Miller)
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"A question that comes up on a pretty regular basis is
whether or not servers should be routinely rebooted. Should they be
rebooted once per week, or should they be allowed to run for as
long as possible to achieve maximum "uptime"?
"To me the answer is simple: with rare exception, regular
reboots are the most appropriate choice for servers.
"As with any rule, there are cases when it does not apply. For
example, some businesses running critical systems have no allotment
for downtime and must be available 24/7. Obviously systems like
this cannot simply be rebooted in a routine way. However, if a
system is so critical that it can never go down then this situation
should trigger a red flag that this system is a point of failure. A
strategy for handling downtime, whether planned or unplanned,
should be initiated.
"Another exception is that some AIX systems need significant
uptime, greater than a few weeks, to obtain maximum efficiency as
the system is self tuning and needs time to obtain usage
information and to adjust itself accordingly. This tends to be
limited to large, seldom-changing database servers and similar use
scenarios that are less common than other platforms."