Data Replicator
LanderReplicator
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For Windows
For Linux
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For SCO OPENSERVER
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What is LanderReplicator?
LanderReplicator is a software with byte-size synchronous replication. Work on the driver layer of operating system, any write operation to disc can be caught. Be able to ‘push’ the changeable bytes the users concern to the target equipment by IP network, realize real-time data synchronization between source address and destination address.
The so-called synchronous replication of LanderReplicator is that any data changes from source are ‘pushed’ to the destination synchronously. If the data fail to be delivered to the destination because of network jam, the replication is unreal-time.
Understand LanderReplicator from the following aspects:
1. Platform support : Windows Server 2008, 2003, 2000;
2. Application scope: all data replication, including databases and files;
3. Size of replication: byte-size level;
4. Synchronous mechanism: Push;
5. Replicate strategy: one-way

 
What is LanderReplicator able to do?
    The problem LanderReplicator is able to solve is that the data change can be replicated in byte-size. On the basis of the feature, it usually has application in mirror high availability (MirrorHA) and data disaster recovery. MirrorHA is a solution using mirror technology to synchronize data between the two servers, which have no shared storage. The data in one server is replicated to another server synchronously, which is to ensure the consistency of data between two servers after cluster shifting.


    In data disaster recovery, when the productive system meets with disaster, the production center will be taken over by disaster recovery center, which then will provide related application services. As a rule, because of the long distance between the production center and the disaster recovery center, the consistency of data relys on the data replicator software, such as LanderReplicator, which synchronizes data by network.
Technical Innovation in LanderReplicator :
    Byte-size monitoring

    Initiative PUSH mechanism

    Data manipulation based on bare equipment
Advantages of LanderReplicator:
    1. High-level security

    2. Fast speed of replication

    3. Low resource occupancy

    4. Easy implementation

    5. Easy management

    6. Integration with Cluster slitlessly
Technical Indexs of LanderReplicator:

    Description

    Index

    Supported synchronous links

    3

    Supported nodes

    2256

    Supported repliacate tasks

    8256

    Type of replicate tasks

    Volumn/Catalog/File/Database

    Size

    Byte-size level

    Replicate thread

    Single-thread,multi-thread

    Data reduction

    Optional

    Supported platform

    Windows2000 or above

    Supported cluster software

    All

    Language

    English,Chinese

    Graphic management monitor

    Support

    Direction of replication

    one-way, multi-way

     
Comparison of LanderClusterMirrorHA and LanderClusterHA:
LanderClusterMirrorHA: a solution using mirror technology to synchronize data between the two servers.
LanderClusterHA: a solution using shared storage.

    Comparison

    LanderClusterMirrorHA

    LanderClusterHA

    Requirements for maintaining

    High,Complicated

    Low,Simple

    Data storage

    Business data are stored in active and standby servers.

    Business data are stored in shared storage.

    Speed of application shifting

    Fast(related with sync stress)

    Fast(<30s)

    Suitable system

    Low rate of data increment, the long distance between servers

    High rate of data increment, fast fault shifting

    The influence on the performance of active equipment

    The occupancy of CPU is 0-30%(related with sync stress).

    The occupancy of CPU is less than 5%.

    Influence on network

    The using of bandwidth is less than 40%.

    The using of bandwidth is less than 1%.

    Requirements for storage

    Active and standby equipments must have enough storage space, which can store business data and affairs log.

    It needs shared storage array, which satisfies the business storage.

    Requirements for network

    Each server need one network card at least.

    Each server need two network cards at least.

    Requirements for distance

    TCP/IP is connected, no distant limitation.

    TCP/IP is connected, and take the distance of storage into consideration.

    Total cost

    Low

    It needs storage.High

    Requirements for servers

    The capability of the two servers is agree with each other.

    The capability of the two servers could not agree with each other.