SUMMARY: mirroring software?

From: Micah Anderson (
Date: Wed Jul 02 1997 - 12:20:18 CDT

I apologize for the late summary, I hope this answers some people's
questions about mirroring software:

The original question was as follows:

On Wed, 26 Mar 1997, Micah Anderson wrote:
> I am looking for some suggestions for mirroring software for
> Solaris Sparc and X86. I want to be able to mirror a web site to another
> machine and thought others may have had some experience with software and
> might be able to make some recommendations.

Thanks to:

If I missed someone, I apologize.

The responses, in no particular order are:

>From Wed Jul 2 10:13:25 1997
Date: Wed, 26 Mar 1997 18:17:11 -0500 (EST)
From: Benjamin Cline <>
To: Micah Anderson <>
Subject: Re: Mirroring software

Gnu wget can be used for mirroring web sites. It's not the fanciest, but
the price is right (free :-). Have a look at


Benjamin R. Cline       Harrison & Troxell, Inc.
                     Quis Custodiet Ipsos Custodes?

>From Wed Jul 2 10:13:30 1997 Date: Thu, 27 Mar 1997 11:55:17 EST From: Kevin Sheehan {Consulting Poster Child} <> To: Micah Anderson <> Subject: Re: Mirroring software

We have a product called UPFS that does exactly that. Check out our web page at and look under Products.

If not, I'll be happy to forward you information. If you have any questions at all, please feel free to send mail to

l & h, kev

>From Wed Jul 2 10:13:34 1997 Date: Wed, 26 Mar 1997 16:56:58 -0800 From: Celeste Stokely <> To: Subject: Re: Mirroring software

I look forward to reading your summary, because I want to do the same thing myself. I've found 1 possible solution, but I haven't played with it yet. (mirrors themselves)

..Celeste Stokely, Unix System Administration Consultant Stokely Consulting, 211 Thompson Square, Mountain View CA 94043 - Voice: 415.967.6898 - FAX: 415.967.0160 - Home of Unix Serial Port & Sysadm Resources

>From Wed Jul 2 10:13:37 1997 Date: Thu, 27 Mar 1997 09:59:57 GMT From: To: Subject: Re: Mirroring software

Hi Micah

This is quite a good one, as there are a number of ways this is done (complete or sort of!).


Two workstations as first, but each poles for the other one, and should the other one die, the second server reboots, 'faking' the first server, (this has complications when you have routers that hold the MAC address for long amounts of time (normally configurable). Because the MAC address will not match the IP address. Information on the web site is backed up nightly to the second web server.


Two workstations running alongside each other, with their own names and IP addresses, with a DNS round robin for both hosts. I.e. the DNS entry www.domain has two CNAMES of www1.domain and www2.domain. If you upload a file to one web-site, then you upload it to the other at the same time. If one of the web servers goes down, at least you have half a service. Third and best:

Two workstations, with Fibre Channel connections to a central storage array, where all software (web and applications) are run from. Veritas software installed on both servers, and configure the veritas software to provide polling of processes, if one process on one host fails, the process starts up on the other host. BUT COSTLY! I have opted for the second, as I have datafeeds going directly to the web servers updating them every few seconds.


Michael Bennett London International Financial Futures & Options Exchange 0171 379 2745

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