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Thread: replication

  1. #1
    Join Date
    Jun 2006
    Location
    Omaha, NE
    Posts
    4

    Default replication

    Is there any plans for replication/rsync between iscsi servers? We currently have two iscsi enterprise servers and would like to place one at our disaster recovery site and replicate the volumes between sites. I noticed that the source CD contains the rsync package. Thanks.

  2. #2

    Default replication

    Resynchronization is only for FILE LEVEL synchronization, while in iSCSI we are
    dealing with block level device. Whole new engine is being written
    and will be available when ready.

  3. #3

    Default

    Is the new engine with replication still on track for early July availability? I've been running the ISCSI demo CD and like what I see so far. With replication, our company can sell your product to our customer base.

  4. #4

    Default

    Just a note on version 1.70 - This is not ready yet please be patient.

    Yes! Version 1.70 will be ready. Here is a short description of how it is designed.

    volume replication:

    Working of the replication is very similar to RAID 1.

    The first stage is rebuilding of the destination to be the copy of the
    source volume. Next stage (endless) is online modifying the destination
    volume to keep the mirror. The difference comparing to the RAID 1 is that,
    after any broken connection only the changed data will be 'rebuild' (again
    first stage takes place) on the destination.

    Note: the replication should be performed on separate NIC and the connection
    should be as fast as the main network connection, to prevent lowering data
    throughput.

    Once you create the Target Volume you have the choice to set it as Source or
    Destination to the mirrored server. Replication of volumes should be same
    size.

    Please contact 770-881-7680 for all of North America Pre-Sales questions.

  5. #5
    Join Date
    Jun 2006
    Location
    Omaha, NE
    Posts
    4

    Default

    I still have not seen version 1.70 posted for iSCSI Enterprise. Will it be posted soon? Thanks.

  6. #6

    Default Replication

    We are in final testing for release, our engineers eagerly provide high quality and will not
    release until all tests are valid.

  7. #7

    Smile Volume Replication

    I have not seen version 1.70 for iSCSI Enterprise.
    Will be be there soon ?

  8. #8

    Default Target Volume Replication

    The release of iSCSI Enterprise v1.70 that contains Target Volume Replication is not yet complete. Please be patient as there is allot of high level testing that has to take place in order for it to provide the maximum stability. We appreciate your desire to have this feature as this will provide so many benefits, but we will not release until all tests have been approved by our engineers.

  9. #9

    Default

    How is failover handled in replication situations? Is there a method to switch to the other SAN if primary fails? Or do we have to do this manually?

    My initiator would be ubuntu linux server.

    Thanks for your reply!

  10. #10

    Default Target Volume Replication

    When the new release of v1.70 is complete the function to provide Target Volume Replication is very similar to RAID 1.

    The first stage is rebuilding of the destination to be the copy of
    the source volume. Next stage (endless) is online modifying the destination
    volume to keep the mirror. The difference comparing to the RAID 1 is that,
    after any broken connection only the changed data will be 'rebuild' (again
    first stage takes place) on the destination.

    Note: the replication should be performed on separate NIC and the
    connection should be as fast as the main network connection, to prevent
    lowering data throughput. Once you create the Target Volume you have the choice to set it as Source or Destination to the mirrored server. Replication of volumes should
    be same size.

    Changing destination to source without loosing data is only possible when
    data is consistent.

    This is a manual operation on how to change source to destination:
    1. Stop replication task on source or turn off server
    2. Now it will be possible to change destination to source, when the data is
    consistent.

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