On Sun, 11 May 2008 22:42:52 -0400 (EDT)
"Rich Braun" <
richb@...> wrote:
> Hmm I don't understand this argument. If main power to the computer is off
> then you can't turn it on no matter what kind of options you have. In my case
> I'm working with systems that each have two power supplies so hopefully the
> above scenarios would be virtually impossible (at least, no more likely than a
> scenario where a DRAC could somehow put power into the system by some
> alternate method). The KVMs don't have any mechanism for power cycling or
> resetting so that's what interests me about the DRAC/ILO solution.
>
> Didn't know you could connect a separate power supply to the DRAC or ILO, I
> really am just starting out with this stuff, just wanted to post here that
> this is an alternative to the KVMs (which have *always* frustrated me). Maybe
> the console front-ends will ultimately prove just as frustrating but so far I
> haven't had any troubles. And the "user experience" is as good as or better
> than the Raritan or Avocent connection, at least through a 100-Mbit or faster
> network link.
As mentioned, on an HP ILO, when you power off the computer (eg.
shutdown -h or via the power button) the ILO board remains powered on.
Certainly, if you pull the plug (or plugs) that will certainly power
down the ILO.
Some KVM's do have power options. In our case, we do have physical
access 9-5 and usually do not have any mission critical applications
requiring access outside of normal business hours, but we do have
employees who do log in nights and weekends.
So, my objective is to be able to manage the systems remotely more as a
convenience. I'll take a look at the DRAC solution since the Intel
whiteboxen are Supermicro.
Note that while at HP, we had a very large lab in the Linux Expertise
Center (about 500 square feet) with equipment ranging from smaller
ProLiant systems up to large SuperDome with mostly Linux, but also
Windows Server, HP-UX, and different virtualization strategies. We
did use KVMs so we could have console access from our desks although
the lab was accessible to us 24x7. I think we might have used Brocade
at the time.
--
--
Jerry Feldman <
gaf@...>
Boston Linux and Unix
PGP key id: 537C5846
PGP Key fingerprint: 3D1B 8377 A3C0 A5F2 ECBB CA3B 4607 4319 537C 5846
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