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ENTERPRISE DATA PROTECTION SOLUTIONS
    Mission Critical Business Continuity
                 April 2004


                       
    Topics for Discussion


     • Introduction to XOsoft

     • Introduction to WANSync

     • Introduction to WANSync HA

     • Introduction to Data Rewinder for Continuous Backup




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    XOsoft Mission




                XOsoft is a Provider of
         Business Continuity Software Solutions
       to Enable Instant Recovery From Any Type 
          of Disaster, Including Common Data 
                      Corruptions  



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    About XOsoft

                 •   1999, by Leading Software Experts
     Founded     •   ~ 30 Employees heavily weighted towards engineering
                 •   Venture-backed with JK&B Capital as lead investor

                 •   Burlington, MA (Sales, Marketing, Support) 
     Locations   •   Tel-Aviv, Israel (R&D)


                 •   Leonid Shtilman, CEO – over 15 years of experience in 
                     technology and corporate management;2 successful hi-tech 
                     startups previously
                 •   Tom O’Connell, VP Sales – more than 18 years of experience 
                     in sales and executive sales management at Sybase, Oracle 
    Management
       Team          and Compaq
                 •   Gil Rapaport, VP Marketing – over 12 years of experience in 
                     Marketing and Bus. Dev. in the telecom and software industry
                 •   Dima Barboi, VP Engineering – more than 15 years of 
                     experience in numerous programming disciplines and mastery 
                     of multiple software development environments


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    XOsoft – Enterprise Data Protection Products

    • XOsoft: Provider of software for business continuity 
      solutions including instant recovery from all types of data 
      disasters
    • Product Suites include:
          • WANSync™ - global business continuity platform for 
             disaster recovery, data and content distribution based on 
             real-time replication technology
           • WANSync™ HA – global business continuity solution for 
             high availability with fully automatic fail over capabilities
           • Data Rewinder™ - server-based solution dealing with data 
             corruption, through a pioneering Rewind technology

    • All product suites tailored to industry standard application 
      and database servers, including Microsoft Exchange, 
      Microsoft SQL and Oracle

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    Introduction to WANSync
               and
          WANSync HA
              from
             XOsoft



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     WANSync
    • WANSync synchronizes critical information servers to    
      remote replicas, and keeps them fresh and available         
      with continuous, real-time replication
    • Wide Range of Applications:
        – High Availability                                                                              - Disaster Recovery


                      
        – Data Distribution                                                                              - Server Migration
                                                                                                          
                                
    • Benefits: ‘soft installation’, rewind technology, application 
                                                  



                            
                                              
      aware, automatic failover, tree structure, high performance                       
                                                                                                                                               

      over WAN                            
    • Tailored Products include:
        – WANSync Exchange                                                                               - WANSync SQL
        – WANSync Oracle                                                                                 - WANSync Server

    • Multiple and cross platforms support (Windows, Solaris, Linux, AIX)


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    DR Site

      Production Site                                  Backup Site



                       nc
                   NSy
                WA                                           N-
                                                          WA c
                                                              n
                                                           Sy
                               Real-time Replication

                                  Fast Recovery               Storage

     File/Application/DB Server                         Low-end Host
           (Sun e450 Server)                           (Pentium-based Server)




           Users


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    WANSync HA 

    • Release of WANSync HA on December 15, 2003 

    • Tailored to industry standard application and database servers, 
      including Microsoft Exchange, Microsoft SQL and Oracle

    • Automatic fail-over supports 
        –   IP takeover
        –   DNS redirection
        –   Hostname switchover
        –   Automatic startup of services and database mount
        –   Automatic update of AD (for Exchange 2000)
        –   Execution of pre and post fail-over scripts

    • Server failure and application failure awareness

    • Protection from data corruption employing the Rewind technology

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     WANSync HA  - Configuration




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     WANSync HA - Benefits

     • Unlimited Availability - WANSyncHA easily surpasses 
       traditional auto-failover solutions by breaking through 
       geographical and network technology-imposed barriers
     • Fast and Simple Installation - WANSyncHA, unlike other 
       solutions, requires neither lengthy server and client station 
       reboots during installation and maintenance activities, nor 
       significant changes to your IT infrastructure 
     • Transparent Operation - WANSyncHA is designed to operate 
       autonomously  and  intelligently,  requiring  minimal  investment 
       in IT manpower 
     • Cost-Effectiveness - Unlike competing solutions that require 
       additional 3rd party clustering solutions to be installed, 
       WANSyncHA is completely self-contained and works with the 
       software and hardware platforms the customer already own
     • Application-Oriented HA Solution - Exchange, Oracle and 
       SQL specific support


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     WANSync “Live”

                                                   Statistics




                  Replication    Live statistics
                  Tree
      Scenarios




                    Events




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     WANSync and WANSync HA Rewind Technology


          Files in                     Files in
         Origin host                 Replica host           Rewind Folder
                                                              Exchange
                       Replication                            Checkpoint
         Corrupted
          Correct                    Corrupted
                                      Correct                   or
           Data                        Data                   Pre-garbage
                       Recovery
                                                    Correct Event
                                                     Data       or
                                                              User-defined
                                                              Event
                                                                or
                                                              Timestamp 




          Users
          Correct
           Data



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     Versatile Tree-based Topologies


     • Scalable

     • Reduce load on master

     • Saves bandwidth




        One-to-many       Many-to-one   Many-to-many

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     WANSync and WANSync HA Benefits
     • Soft installation – no system reboot or application 
       shutdown required
     • Auto-discovery – automatic mapping of all 
       application and DB components, for effortless 
       replication setup (Exchange, SQL, Oracle)

                
                                                                   Advanced Server
                                                                        Server

     • High performance – real-time replication of large             Professional

                                                    
       volumes of changes, transmitting only incremental 
                                           

       changes                                         
     • Self-healing – automatic synchronization in case of 
                                                   
       broken links, ensuring zero downtime
     • Data integrity – data is written to the replica in the 
       exact same order it was written to the master server 
     • Immediate recovery – in case of corruption, 
       WANSync will recover consistent data from replicas


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     Introduction to Data Rewinder

                 from
                XOsoft




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     DataRewinder

     • Data Rewinder™ Product Suite – standalone product  
       dealing with data corruption, through Rewind 
       technology
           Based on proprietary filtering files system
        – “Go back” in time and to the major events as “rotation of 
          logs”, “checkpoints”, “checksums”, etc.
        – Provide an ability to bookmark a rewind point – great 
          advantage for system administrators and testing environment
        – Major advantage over snapshots: reliable rewind to the event 
          of consistency and continuous journaling
        – tailored to industry standard application and database servers, 
          including Microsoft Exchange, Microsoft SQL and Oracle



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     Emerging Continuous Backup Market

     • Continuous backup is consider by analysts as the next step 
       in enterprise backup evolution:
       Tape Backup --> Disk Backup --> Snapshots --> Continuous Backup 

     • Shift from time to backup to
       time to recovery gains
       momentum
     • Data Rewinder is complementary
       offering to backup and snapshot
       solutions - reliably fast 
       rewind to the event of
       consistency, through
       OEM deals
     • Potential partners: 
       Backup and Snapshot Vendors
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     Data Rewinder – Events View




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     Data Rewinder – Application events




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