Solved

Sync / backup large data over private network

Posted on 2012-03-23
16
354 Views
Last Modified: 2012-07-23
We have a VPN connection to our other facility and need to be able to transfer differential data over the link.
Right now we're using Rsync, but I would like a method that would eliminate the encryption of the transfer so we can speed this up a bit.
Right now we're using the arcfour encryption and getting slightly faster results then we were with blowfish.

How can I eliminate this all together, but still have the sweet advantages of Rsync?
Both hosts are linux based.
0
Comment
Question by:spiz79
  • 6
  • 4
  • 2
  • +3
16 Comments
 
LVL 30

Expert Comment

by:IanTh
Comment Utility
do you still want encription ?
0
 
LVL 11

Expert Comment

by:legolasthehansy
Comment Utility
Try this
rsync -rvlpogt /host /destination --progress

-r - recursive
v - verbose
l - copy symlinks
p - preserve permissions
o - preserve owner name
g - preserve group name
t - preserve time stamp
0
 

Author Comment

by:spiz79
Comment Utility
No I still do not want encryption. This is over a private network (VPN) so encryption isn't needed.

right now this is what I'm doing

rsync -ae "ssh -c arcfour" root@192.168.1.2:/backup/VM /backup --progress -z
0
 
LVL 11

Assisted Solution

by:legolasthehansy
legolasthehansy earned 100 total points
Comment Utility
Remove the -z
This speeds up the transfer in most cases.
0
 
LVL 18

Expert Comment

by:irweazelwallis
Comment Utility
have a look at that - silly to encrypt over a VPN that is already encrypted

Secure Network Transfers

Set the -e option of rsync to use ssh instead of rsh when copying to a remote system. Modern versions of rsync use ssh by default. While ssh is slower than rsh, the data being transfered will be encrypted, and therefore less likely to be maliciously read or altered, or randomly corrupted in transit.

$ rsync -e 'ssh -ax' -avz example.org:/tmp .

If speed is a concern, use a weaker encryption option to ssh.

$ rsync -e 'ssh -ax -c blowfish' -avz example.org:/tmp .

The -ax options to ssh disable Secure Shell (SSH) agent and X11 forwarding, which are not needed by rsync. Also consider setting -o ClearAllForwardings to ssh, to prevent possible automatic port forwards. For more information on options to OpenSSH, peruse ssh(1) and ssh_config(5).

taken from http://72.14.189.113/howto/rsync/
0
 

Author Comment

by:spiz79
Comment Utility
So rsync over RSH? how?
0
 
LVL 18

Assisted Solution

by:irweazelwallis
irweazelwallis earned 200 total points
Comment Utility
by either using -e to specifiy no encryption or forcing rsh

http://okbanlon.com/notes/rsync.html - see halfway down for examples
0
 

Author Comment

by:spiz79
Comment Utility
thanks for the reply..
this is what I'm currently using..I have -ae ..is that enough?

rsync -ae "ssh -c arcfour" root@192.168.1.2:/backup/VM /backup --progress -z
0
What Is Threat Intelligence?

Threat intelligence is often discussed, but rarely understood. Starting with a precise definition, along with clear business goals, is essential.

 
LVL 18

Assisted Solution

by:irweazelwallis
irweazelwallis earned 200 total points
Comment Utility
try taking the e and ssh config element out of it - in that command you are specifying ssh and an algorithm
0
 

Author Comment

by:spiz79
Comment Utility
rsync -a root@192.168.1.2:/backup/VM /backup --progress

That's what I'm using now and it actually appears to be moving slower.
0
 
LVL 18

Expert Comment

by:irweazelwallis
Comment Utility
that is odd rsh should be faster than ssh
0
 
LVL 38

Assisted Solution

by:Aaron Tomosky
Aaron Tomosky earned 100 total points
Comment Utility
You also dropped the compression which could be helping on a wan link. Add the -z back on and see if that helps
0
 
LVL 5

Expert Comment

by:1ly4me
Comment Utility
mount the remote backup folder locally (you can use samba or NFS) and take backup using tar.
You no need any encryption, Just tar the backup files and copy it to locally mounted backup location
0
 

Author Comment

by:spiz79
Comment Utility
1ly4me
Would this have the same DIFF capabilities of rsync?
0
 
LVL 5

Accepted Solution

by:
1ly4me earned 100 total points
Comment Utility
Do you mean differential backup?
Yes it works well.
To backup,
#rsync -trv /local/location  /mounted/location  > /mounted/location/rsync.log

Open in new window

for differential backup
#rsync -trv /local/location  /mounted/location  > /mounted/location/rsync_diff.log
You no need to specify any encryption option.
0
 

Author Comment

by:spiz79
Comment Utility
so ultimately your saying NFS / Samba will be faster then RSH?

thanks
0

Featured Post

Maximize Your Threat Intelligence Reporting

Reporting is one of the most important and least talked about aspects of a world-class threat intelligence program. Here’s how to do it right.

Join & Write a Comment

Life is full of imperfections – we all know it. Sometimes bad things happen to people for no particular reason. As they say: “it happens”. All we can do is to find a way to make some unavoidable situations… avoidable. Every kind of hardware has i…
Workplace bullying has increased with the use of email and social media. Retain evidence of this with email archiving to protect your employees.
To efficiently enable the rotation of USB drives for backups, storage pools need to be created. This way no matter which USB drive is installed, the backups will successfully write without any administrative intervention. Multiple USB devices need t…
This tutorial will walk an individual through the process of configuring basic necessities in order to use the 2010 version of Data Protection Manager. These include storage, agents, and protection jobs. Launch Data Protection Manager from the deskt…

771 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now