Benny
Sep 27, 2013 3:13:10 AM

Disaster Recovery over slow connection

At start sorry for bad English. Hi. I am new to syncrify. In the moment I am testing syncrify and finding excellent. Scenario: I want to backup 3 Notebooks. There are on different locations, on work1, work2, home and so on. One backup must be done to one PC in office, say serverA. Additionally I want to backup offsite on another location if iffice burns down or serverA is stolen, say serverB. The connection to serverB is normal DSL, slow for big data. I need the disaster recovery feature for slow connection over internet. (A second server in the office with current desaster recovery on fast connection would burn together with serverA.)


CP vd Vyver
Nov 7, 2013 11:40:29 PM

Disaster Recovery over slow connection

I second this



Paul
Apr 4, 2014 4:22:15 AM

Disaster Recovery over slow connection

I  support this as well. There needs to be some sort of option for replication to DR over the web, possibly using rsync. Currently the methodology assumes you have bandwidth like in the states or that the DR will be on the same high speed network.

 



Synametrics support engineer
Apr 22, 2014 10:00:15 AM

Disaster Recovery over slow connection

Paul,

One way is to use a Syncrify client to backup a Syncrify server. This approach leaves the server available for clients and you will be able to use rsync protocol.

It is important to understand why we recommend DR feature over a faster network. The rsync protocol reduces network traffic at the cost of local disk I/O and CPU. If Syncrify enabled the rsync protocol in DR feature, the server is going to do a lot of I/O after every backup. Disk is a probably the slowest resources on a computer. Imagine 20 processes trying to access the disk (which only has one head) at the same time. This will not only slow down the DR process but will reduce the overall scalability.

Imran



Lars
May 7, 2014 6:12:46 AM

Disaster Recovery over slow connection: option "recovery server"?

The recovery over slow connection is important to me, too.

I understand the topic from Imran.

I there a way to add a third option "mirror to slave", which is taken to a customizable time and interval?

Then I can set on e.g. "once per day at midnight". This is not a full disaster recovery, but a usable way for more little company or private installations.

 

The proposed solution does not convince me. The backup of the Repository as another profile in client to another syncrify server backs up all the .SYNVER files as normal files and slows down, because the offsite syncrify server checks each of these files.

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