RE: Blade Servers
- From: "Matthew Zito" <mzito@xxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 9 Apr 2004 14:04:08 -0400
Well, the backplane issue is actually a non-starter - whoever wrote this =
article doesn't know what they're talking about. On all of the major =
blade vendors' designs, the backplane is a passive wire-management =
system. That is, all of the blades have copper traces for every =
ethernet, fibre channel, etc. on the backplane, that are brought back to =
either a breakout panel or a switch).
Based on that, there's no way that the backplane could be a performance =
limitation - as its physically and electrically identical to a wire =
running out the back of a 1U server. =20
Incidentally, that complaint is more valid about egenera - as they do =
actually have a shared high performance backplane based on VI =
technology, from which they create software-emulated ethernet and fibre =
channel connections. Their backplane could theoretically be a =
limitation, but I would argue they're not blade servers in the sense =
that's being discussed here
As far as the power/heat issue, yes the BTU/sq. ft. issue is a valid =
one, but the fans/blowers that come in most of the blade servers these =
days are a sight to behold. Our lab, which has a number of IBM =
bladecenters running in it, is in fact, very cool, and requires no =
special cooling or ventilation (in fact, some of the chassis do not have =
the necessary back depth recommended by IBM, and run fine regardless - =
their fans just run slightly faster than the others).
Thanks,
Matt
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of
Jared.Still@xxxxxxxxxxx
Sent: Friday, April 09, 2004 1:55 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: Re: Blade Servers
<snip>
You're right, they are hot. We've not used them here, but I've read=20
comments
by those that have. They generate a *lot* of heat. Make sure your data
center can deal with it.
They also share a backplane. Here's a good link detailing some issues.
http://technologyreports.net/enterpriseinnovator/?articleID=3D1891
<snip>
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