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Replication Solutions with Open-E Data Storage Software (DSS V6)

  1. Replication Solutions Supported by Open-E DSS
  2. Data Replications - Replication Solutions Supported by Open-E DSS
    1. Asynchronous Data Replication within a System
    2. Asynchronous Data Replication over a LAN
    3. Asynchronous Data Replication over a WAN
  3. Volume Replications - Replication Solutions Supported by Open-E DSS
    1. Synchronous Volume Replication over a LAN
    2. Synchronous Volume Replication over a WAN
    3. Synchronous Volume Replication with Failover over a LAN

NOTE:

Software Version: DSS ver.6.00 up40.

top ↑1. Replication Solutions Supported by Open-E DSS

  Replication Mode Source/Destination Data Transfer Volume Type
Synchro -nous Asynchro -nous w/ System LAN WAN File based Block based NAS iSCSI FC
File-IO Block-IO
Asynchronous Data Replication within a system                      
Asynchronous Data Replication over a LAN                      
Asynchronous Data Replication over a WAN                      
Synchronous Volume Replication over a LAN                      
Synchronous Volume Replication over a WAN                      
Synchronous Volume Replication with Failover over a LAN                      
  • Open-E DSS supports three different types of file based Data Replication
    • Asynchronous Data Replication (file based) within the system
    • Asynchronous Data Replication (file based) over a LAN
    • Asynchronous Data Replication (file based) over a WAN
  • Additionally, DSS Supports three types of block based Volume Replication
    • Synchronous Volume Replication (block based) over a LAN for NAS, iSCSI and Fiber Channel appliances,
    • Synchronous Volume Replication (block based) over a WAN for NAS, iSCSI and Fiber Channel appliances,
    • Synchronous Volume Replication (block based) with Failover over a LAN for iSCSI appliances

top ↑2. Data Replications - Replication Solutions Supported by Open-E DSS

  Replication Mode Source/Destination Data Transfer Volume Type
Synchro -nous Asynchro -nous w/ System LAN WAN File based Block based NAS iSCSI FC
File-IO Block-IO
Asynchronous Data Replication within a system                      
Asynchronous Data Replication over a LAN                      
Asynchronous Data Replication over a WAN                      
  • Open-E Data Replication enables asynchronous file and folder copy from one storage system to another for maximum data availability.
    • With Asynchronous Replication, a point-in-time snapshot copy of data on the source is made and copied to the target storage system.
    • For maximum flexibility, you can run a data replication task in two directions: one system can be both the source and the destination at the same time, allowing cross data backups on several systems. Replication can be used in disaster recovery or for disk-to-disk backup.

top ↑2.1. Asynchronous Data Replication within a System

Replication between two RAID ARRAYs within one system
  • Recommended Resources
    • Key Hardware
      • x86 compatible
      • RAID Controller 1
      • RAID Controller 2
      • HDD's
      • Network Interface Cards
    • Software
      • Open-E DSS
  • Benefits
    • Data redundancy over RAID Array
    • Local data availability
    • Low cost solution
  • Disadvantages
    • In case of complete system failure, data will be lost or inaccessible
Asynchronous Data Replication within a System - pic 01

Pic 01

mark_aData is written and read from Array 1

mark_bData is periodically replicated to Array 2

Asynchronous Data Replication within a System - pic 02

Pic 02

mark_aIn case of raid array error or disk drive error on the Raid Array 1, the server will send an e-mail notification to the administrator and/or users

mark_bThe administrator then switches from Array 1 to Array 2

Asynchronous Data Replication within a System - pic 03

Pic 03

mark_a After switching, replicated data is available on Array 2

top ↑2.2. Asynchronous Data Replication over a LAN

Replication between two systems within a single LAN
  • Recommended Resources
    • Key Hardware (two systems)
      • x86 compatible
      • RAID Controller
      • HDD's
      • Network Interface Cards
    • Software
      • Open-E DSS, 2 units
  • Benefits
    • Data Redundancy over a LAN
    • Local data availability
  • Disadvantages
    • Natural disasters can destroy both machines
    • High cost of solution
Asynchronous Data Replication over a LAN - pic 04

Pic 04

mark_aData is written and read in System 1

mark_bData is periodically replicated from System 1 to System 2 over the LAN

Asynchronous Data Replication over a LAN - pic 05

Pic 05

mark_aIn case of raid array error, or disk drive error on System 1, the system will send an e-mail notification to the administrator

mark_bAdministrator then switches users to System 2

Asynchronous Data Replication over a LAN - pic 06

Pic 06

mark_aAfter switching, replicated data is available on System 2

top ↑2.3. Asynchronous Data Replication over a WAN

Replication between two systems over a WAN
  • Recommended Resources
    • Key Hardware (two systems)
      • x86 compatible
      • RAID Controller
      • HDD's
      • Network Interface Cards
    • Software
      • Open-E DSS, 2 units
  • Benefits
    • Data redundancy
    • Maximum data safety
  • Disadvantages
    • High cost of WAN solution
Asynchronous Data Replication over a WAN - pic 07

Pic 07

mark_aData is written and read in System 1

mark_bData is periodically replicated to System 2 via an Internet connection

Asynchronous Data Replication over a WAN - pic 08

Pic 08

mark_aIn the event of a raid array error or disk drive error on System 1, the server will send an e-mail notification to the administrator, In the event of a loss of system 1 users will be notified,

mark_bAdministrator then switches users to System 2 over the WAN.

Asynchronous Data Replication over a WAN - pic 09

Pic 09

mark_aAfter switching, replicated data is available on System 2

top ↑3. Volume Replications - Replication Solutions Supported by Open-E DSS

  Replication Mode Source/Destination Data Transfer Volume Type
Synchro -nous Asynchro -nous w/ System LAN WAN File based Block based NAS iSCSI FC
File-IO Block-IO
Synchronous Volume Replication over a LAN                      
Synchronous Volume Replication over a WAN                      
Synchronous Volume Replication with Failover over a LAN                      

Volume Replication (synchronous) over LAN or WAN is block based and supports iSCSI, FC and NAS logical volumes. It provides data availability in case the source system is offline from a disaster and the destination will have the replicated data of the source server.

Volume Replication with Auto Failover is a fault tolerance process via iSCSI Volume Replication, that creates mirrored target data volumes.

  • Data is copied in real-time.
  • Every change is immediately mirrored on the secondary storage server.
  • In case of a failure, scheduled maintenance of the primary server, or loss of the primary data source, failover automatically switches operations to the secondary storage server, so all processes can be continued as usual.

top ↑3.1. Synchronous Volume Replication over a LAN

Replication between two systems within one LAN
  • Recommended Resources
    • Key Hardware (two systems)
      • x86 compatible
      • RAID Controller
      • HDD's
      • Network Interface Cards
    • Software
      • Open-E DSS, 2 units
  • Benefits
    • Data Redundancy over a LAN,
    • Enables continuous data access
  • Disadvantages
    • High cost of solution,
    • Natural disasters can destroy local systems.
Synchronous Volume Replication over a LAN - pic 10

Pic 10

mark_aData is written and read to System 1

mark_bData is continiously replicated to System 2

Synchronous Volume Replication over a LAN - pic 11

Pic 11

mark_aIn case of raid array error or disk drive error on the System 1, the server will send an e-mail notification to the administrator, In the case of a failure of system 1, users will be notified,

mark_bAdministrator then switches users to the System 2

Synchronous Volume Replication over a LAN - pic 12

Pic 12

mark_a After switching, replicated volume is available on System 2

top ↑3.2. Synchronous Volume Replication over a WAN

Replication between two systems over a WAN
  • Recommended Resources
    • Key Hardware (two systems)
      • x86 compatible
      • RAID Controller
      • HDD's
      • Network Interface Cards
    • Software
      • Open-E DSS, 2 units
  • Benefits
    • Data redundancy
    • Maximum data safety
  • Disadvantages
    • High cost of WAN solution
Synchronous Volume Replication over a WAN - pic 13

Pic 13

mark_aData is written and read to System 1

mark_bData is replicated to System 2 via an Internet connection

Synchronous Volume Replication over a WAN - pic 14

Pic 14

mark_aIn case of raid array error or disk drive error on the System 1, the server will send an e-mail notification to the administrator, In the case of a failure of system 1, users will be notified,

mark_bAdministrator then switches users to the System 2 over the WAN.

Synchronous Volume Replication over a WAN - pic 15

Pic 15

mark_aAfter switching, replicated volume is available on System 2

top ↑3.3. Synchronous Volume Replication with Failover over a LAN

Volume Replication with Failover between two systems within one LAN
  • Recommended Resources
    • Key Hardware (two systems)
      • x86 compatible
      • RAID Controller with Batery Backup Unit
      • HDD's
      • Network Interface Cards
      • Ping Node (ping node it is any permanently (24/7) available host in the network. In particular case the ping node function can be performed by the server storing the data on the iSCSI failover volume).
    • Software
      • Open-E DSS, 2 units
  • Benefits
    • Eliminates business disruption
    • Provides data redundancy over a LAN
    • Enables switch redundancy
  • Disadvantages
    • High cost of solution
    • Natural disasters can destroy local systems
Synchronous Volume Replication with Failover over a LAN - pic 16

Pic 16

mark_aData is written and read to System 1 (primary)

mark_bData is continually replicated to System 2 (secondary)

Synchronous Volume Replication with Failover over a LAN - pic 17

Pic 17

mark_aIn case of raid array or disk drive error on System 1 (primary), the server will send an e-mail notification to the administrator. iSCSI Auto Failover determines there is no connection between the servers

mark_bAfter a few seconds Automatic Failover is executed and users are switched to System 2 (secondary)

Synchronous Volume Replication with Failover over a LAN - pic 18

Pic 18

mark_aAfter switching, the replicated volume is available on System 2 (secondary)

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