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How does one transfer a file over a LAN with 0 errors

W

Wolfmyst

Weaksauce
Joined
Nov 10, 2005
Messages
126
I am looking for a reliable data transfer solution. I need to save files from my multimedia work station (Windows XP) and a small home LAN to a remote file server. My network is on a 1 gig switch. I want to save to a Linux based file server with a Raid 1 or 5 setup. My plan was to use Ubuntu Server 7.10

My hardest requirement here is that there is some sort of MD5 type of checking of files that are transfered. If a 0 turns in a 1 during transfer I want to know about it.

I have researched possible solutions. FTP, Samba, NFS. I saw that smart ftp has some hacked in md5 function. Ideally I would like to be able to mount the Linux share as a drive on Windows. I am just not sure of how well these cope with a network errors. It is critical that the files are not corrupted.

What are your thoughts?
 
For the most part, you'll have little trouble with writing files over a LAN. If you do, then you've got trouble that you need to address. Millions of people write files over a LAN (CIFS, NFS, FTP, etc etc) all day long without verifying that there's been no corruption along the way... There are already checks at pretty much step of the process.

But hey, it does happen on the rare occasion.

If you want to be doubly sure, there are plenty of free MD5 hash generators available for both Windows and Linux. If you're talking about a few files, then you could run the hashes by hand and compare them by hand. Lot of freebie files available that'll help with that (Google is your friend)

If you're talking a larger set of files... If you've got a little scripting knowledge, you could pull together a MD5 hash comparison program pretty quick using the command line version of a MD5 hash generator.

http://userpages.umbc.edu/~mabzug1/cs/md5/md5.html

If you want something a little more robust and automated, check out Advanced CheckSum Verifier:

http://www.irnis.net/
 
and get some medication, a home enviroment for personal use doesn't really need this ...... but if your doing it to learn about it.. then go for it using md's. rsync is definatly the way to go. Personally i wouldn't bother at home, the extra 3-4 clicks it takes would annoy me.....time is fun!!!
 
Thanks for the suggestions

This seems like a promising APP:
http://www.aboutmyip.com/AboutMyXApp/DeltaCopy.jsp
I'm not sure if that allows me to use the Window's box as a client to connect to a Linux box. I really like the incremental back up features of rsync too.

That Advanced CheckSum Verifier looks like it could be useful too. I've been bitten by faulty disk controllers/drivers when doing a copies from one HD to another in winxp.

I will be transferring literally 20000+ image files (Canon 20D). This is why a manual checksum of each file will not work.
 
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