RE: Reclaiming Storage...Re-booting Regularly

["Haase, Justin C." <Justin.Haase@xxxxxxxxxxxx>]

I was told by our IBM CE (and many other folks) that an IPL won't hurt it
(PWRDWNSYS RESTART(*YES)), it's the physical stopping of the disk and the
later spin-up.  As much as I like to hear the cool turbo-ish whine of the
fans coming up in our 720s and the 160 disks spinning up in the 740's, I
don't do it anymore.  These machines haven't been physically OFF for almost
two years now.  Very nice.

IPL once a month to reclaim temp storage.

jch

-----Original Message-----
From: Andy Nolen-Parkhouse [mailto:aparkhouse@attbi.com]
Sent: Wednesday, September 11, 2002 9:18 AM
To: midrange-l@midrange.com
Subject: RE: Reclaiming Storage...Re-booting Regularly


Rob,

Perhaps there is a middle ground here.  Some machines are powered off
regularly and without too much concern.  But if someone wishes to do a
full power-down as a maintenance event (as opposed to doing electrical
work or moving the machine), and the machine has been running
continuously for months and months, then it would make sense to do so at
the beginning of a weekend as opposed to the end.

Hardware diagnostics can be triggered at an IPL with doing a full power
down.  The default IPL attribute is *MIN, but using the CHGIPLA command,
this can be switched to *ALL.  For those installations who are not
performing IPL's under tight time constraints, it would make sense to
keep it at *ALL on a permanent basis, perhaps only switching for events
like upgrades which require multiple IPL's.

Regards,
Andy Nolen-Parkhouse

> On Behalf Of rob@dekko.com
> Subject: Re: Reclaiming Storage...Re-booting Regularly
>
> First, I am all in favor of a regular IPL.  But, hasn't it been said
that
> the hardest thing on a computer is stopping it, and starting it?  If
you
> are under maintenance, and you do your IPL's at off times, it
shouldn't be
> a major concern.
>
> Rob Berendt

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