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- Xref: sparky comp.dcom.lans.misc:1094 comp.dcom.modems:19214
- Path: sparky!uunet!gatech!paladin.american.edu!howland.reston.ans.net!usc!news.service.uci.edu!cerritos.edu!swc!wndrsvr!andyb
- Newsgroups: comp.dcom.lans.misc,comp.dcom.modems
- Subject: Data Intensive WAN - Need Recommendations
- Message-ID: <C0M3os.2vJ@wndrsvr.la.ca.us>
- From: andyb@wndrsvr.la.ca.us (Andy Brager)
- Date: Sun, 10 Jan 1993 00:22:03 GMT
- Organization: Wonder Server - Public Access for SoCal
- Lines: 42
-
-
- I posted this before, but possibly it got lost somewhere as I've
- received no responses. I've also expanded the newsgroup coverage.
-
-
- I need recommendations for a WAN. The WAN will have a star topology,
- as there will be one central site, and many (currently 3 envisioned
- but more to be added) remote sites. The remote sites may have a
- small (3 user?) LAN. The central site will probably have a larger
- LAN, type unknown, quite possibly Novell.
-
- The amount of data involved is enormous. On the order of 500MB
- every 20 minutes or so. I believe it will not be a steady stream
- of data, but a 500MB chunk every so often. This may or may not
- already take compression into account. Currently, 10 minutes or
- so to get the data from the remote sites to the central sites is
- acceptable, however this may change in the future. Eventually
- real-time may be required. The remote sites will most likely
- have the data coming from a HP 9000 HP/UX system.
-
- Currently there is no equipment, no cable, no building (as far as
- I know there is no building). My main question is, what hardware
- is needed at each end to support this WAN? In addition, what
- facility and service would be best? My back of the envelope
- calculations say that T1 would take 45 minutes, T3 would be
- 90 seconds. Is there a dial-up T3 option? Are there other
- facilities that would work for this? What sort of bandwidth
- can one get using a VSAT and spread spectrum (if that is a bad
- question, how fast can 500MB be transmitted)?
-
- One or two of the sites may be geographically close (a few miles?),
- but most will eventually be quite far. Do I need to worry about the
- local phone company, or do I only have to deal with a long
- distance carrier? What other questions should I have asked?
- What information did I leave out? Thanks in advance!!
-
- - Andy
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