Open-E Knowledgebase
Volume replication
How does Volume Replication work?
Volume replication is very similar to RAID 1. The first stage involves rebuilding the destination as a copy of the source volume.  The next stage is a continuous online modification of the destination volume to preserve the mirror copy. The difference between this process...
rating 22 Oct, 2008 Views: 5225
Is it possible to perform volume replication between different versions of Open-E software?
As concerns volume replication, you need to make sure that the DRBD daemon version is the same on both Open-E machines (you can check this by downloading the system logs and examining the file drbd.log). If the version is the same, it should work.
rating 18 Sep, 2008 Views: 2913
Is the destination volume available during replication?
Data replication: In data replication, the destination share is available all the time - however, it should be used only for backup purposes because if you change some files, they will be replaced during the next synchronization. Volume replication: In volume replication, the volume will...
rating 18 Sep, 2008 Views: 4666
What happens if connection is temporarily lost during volume replication?
If the connection is lost, the replication will resume as soon as the connection is back. Once the connection is restored, only the synchronization of the data that has not yet been transferred will be carried out. This will happen due to the ECC check of the transmitted data (tied to the...
rating 18 Sep, 2008 Views: 3472
When using volume replication, will a file deleted on the source volume also be deleted from the destination volume?
Yes, the file would in this situation also be deleted on the destination volume.
rating 18 Sep, 2008 Views: 2472
What are the requirements of volume replication?
For volume replication, you need a source, which is the share on an LV you wish to replicate, and you need a destination, which is a share in which you want the replicated data to be stored.  In order for your replication task to work, your source Logical Volume and your destination...
rating 12 Aug, 2008 Views: 3524
What to do when one of the servers involved in volume replication needs to change its IP?
Example application:  There are two SANs using replication; one of them needs to be moved to a different location so that it synchronizes over the WAN, which means its IP will change.    Solution: Stop your replication task by clicking on the stop button in...
rating 18 Sep, 2008 Views: 2587
Why Open-E request to specify bandwidth value for volume replication?
Problem: Can you shed some light why we need to specify the bandwidth when create a volume replication task and what is the recommended value for the SyncSource bandwidth.   Solution:   The bandwidth need to be specified because the daemon works with very high priority. So, in some...
rating 26 Feb, 2009 Views: 5110
Description of Connections Status in relation to Replications
  Discription of Connections in relation to Replications:   Failed. Transient state following an I/O failure report by the local block device. Next state: Diskless.   Inconsistent. The data is inconsistent. This status occurs immediately upon creation of a new resource, on both...
rating 29 Jul, 2009 Views: 3793
What is the difference between asynchronous and synchronous volume replication ?
The main difference between synchronouse and asynchronous volume replication is that synchronouse replication need to wait for the destination server in any write operation. The process goes like this : 1. Write data are buffered on the source system, 2. Source system sends the data to...
rating 08 Nov, 2011 Views: 15702

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