[Beowulf] Remote console management
bill at cse.ucdavis.edu
Fri Sep 23 20:34:22 EDT 2005
With all the console discussions I figured I'd mention that the v20z
management can actually be daisy chained (I.e. 1 foot network cables),
and that the discussion of Masterswitch like devices seemed pretty thin.
I've been using APC 208 3 Phase PDU's for handling power distribution
inside the rack. I'm interested in people's thoughts.
I can power 32 nodes (assuming AMD and not intel based dual or quad cores)
or similar on 2 power strips (so around $550) or $17 per node or so.
To add the ability to turn a node on/off:
$1680 or so for 32 nodes or $52 per node. So something around $52-$17=$35
per node to add the ability to turn them on/off. Granted full consoles
would be nice, but for the most part this is enough to greatly reduce
the number of trips to the server room.
It avoid running a management network (lots of cables), any driver/utility
problems (just needs a web browser), and has zero physical footprint (since
you need the powerstrips anyways). It also blocks no airflow (some racks
can integrate the strips outside the airflow).
Not that I wouldn't appreciate IPMI functionality, but often the price
difference on the quotes I've seen (128 node or so) ends up being more
like $150-$200 per node. Of course many vendors charge less then that,
but it seems like their margins/prices are higher to begin with. Not
a complaint, just an observation.
Computational Science and Engineering
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