An advantage of VM clusters is that they are very robust, highly reliable,
and use hardware very efficiently since they can support many machine
instances per node. A disadvantage is that they support many machine
instances per node and can be over-provisioned to try and leverage the
hardware to its maximum. I guess I'd also want to know if there's a
guaranteed worst case level of performance. It might run great until
another VM instance starts hammering the cluster node, and this could vary
from day-to-day. There may also be problems with where you put the LDM
queue (non-local disk) unless you plan to run it in memory.
Art
On Thu, 16 Jun 2011, Tyler Allison wrote:
those specs don't tell enough.
what's the disk speed/IO?
How much memory?
How many CPU cores?
I can build you the same specs as you have listed below on a Tandy 1000 from
1985.
Sounds like they are wanting to spin you up on a VMware host. Nothing wrong
with that so long as they provision enough horsepower to that image.
Sent from my iPhone
On Jun 16, 2011, at 9:07 AM, Gilbert Sebenste <sebenste@xxxxxxxxxxxxxxxxxxxxx>
wrote:
Hey everyone,
So I am trying to be wooed from our campus IT department to get onto their
cloud of servers. They say they could put on an any operating system that I
want,presuming Centos 6.X when it gets released...and if so, they talk it to
the moon:
Up to 2 TB hard drive space
20 gigabit/sec throughput as of this fall to the Internet2/NLR
2 gb/sec to commodity Internet
24/7 monitoring as of this month
Now backed up fully by a UPS and a new generator
3 sources of A/C from 2 rooftop units
Mirrored in two different places in town, one
on campus, one off-campus, and if one is destroyed,
I can be back up within 20 minutes
So...has anyone actually done this, and is it worth it? I'm afraid to slam everyone else
in my "cloud". Or, is Mick Jagger right, should I stay
off of this cloud?
*******************************************************************************
Gilbert Sebenste ********
(My opinions only!) ******
Staff Meteorologist, Northern Illinois University ****
E-mail: sebenste@xxxxxxxxxxxxxxxxxxxxx ***
web: http://weather.admin.niu.edu **
*******************************************************************************
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Arthur A. Person
Research Assistant, System Administrator
Penn State Department of Meteorology
email: person@xxxxxxxxxxxxx, phone: 814-863-1563
