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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Hi Gembuds, We are getting ready to update our box on which our LDM and Gempak software reside. I wanted to drop a line to see if anyone had any hardware suggestions... I found this thread (below) from 2005, and some of the suggestions still ring true, but wanted to get some updated advice. Just a little more info: • This machine also serves as as web server (http://twister.sbs.ohio-state.edu) (we provide basic model, text, and graphical products to the general public -- but have been held back by hardware limitations) • We have about 8 to 10K worth of funding for this project.. • We have used and would like to continue to use (if at all possible) Redhat Enterprise OS unless someone has other suggestions... Thanks in advance for any suggestions... - Phil --- QUOTED FROM THREAD IN 2005 ---- > Nancy, > > You can get several nicely configured machines for $5K. We are > running RedHat Fedora Core 3 here, which supports 64 bit > processors in the 2.6 kernel. Redhat Fedora is free. Depending on > your campus, you could go the supported RedHat Enterprise OS route. > > We generally recommend that you probably want to consider 64 bit > processors for the future, such as the Xeon or Opteron64. Dual > processor systems are quite affordable, and in the case of > an LDM server that is also doing decoding/filing, and product > generation, you will get the use out of a dual CPU machine. > User desktop systems can go either way. For running models, > the dual CPU systems are definitely going to be the way to go- > and memory should be as much as possible in your budget. > > For an LDM server, it is a good idea to have as much RAM as the size of > your product queue, and your queue should be able to hold an hours > worth of data. If you were getting all IDD feeds, that would be > up to 3GB an hour at present rates. Since you are receiving a smaller > subset of data at this point, 2GB is OK for now. > > For a robust LDM server, just surfing the web, a Dell dual Xeon 2.8GHz > Power Edge SC1425 with 2GB of RAM is running $1377 > (my link was following the small business rack server links > > http://configure.us.dell.com/dellstore/config.aspx?c=us&cs=04&kc=6W300&l=en&oc=sc1425&s=bsd#bottom_anchor > > That link may not get you the same page if it was using cookies etc, but > it gets you in the ballpark. > > >From starting around $1377, you can ad a couple of 250GB disks for about > $400. For desktop systems where you'd need a graphics card and display, > you'll probably add $750 for a 19" flat panel and graphics card, but be > looking at tower cases, and smaller hard disks, maybe 36 or 72GB if the > data is primarily on the server. You could probably get a couple > of desktop systems with nice monitors etc for $1500. > > GEMPAK will run on 128MB, but You'd probably never want to > get a new workstation with less than 512MB. You'd be happiest > planning for the future with 1GB for a desktop system. If you > plan on using the Java based IDV, I'd suggest 1GB. > > If you have a specific plan for number of seats in a lab, let us know > and we may be able to get more specific, or if you are generally looking > at remote access to the server that is doing LDM and modelling, then > rack machines are a good use of space. > > Steve Chiswell > Unidata User Support > -- Phil Birnie -- http://www.birnies.com
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