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ClearReplica > Overview

ClearReplica is a custom add-on to the IBM Rational Software ClearCase product. It provides geographically disjoint development as a less expensive alternative to ClearCase Multisite. ClearReplica provides many of the replication features of ClearCase Multisite as well as additional features. With ClearReplica you can replicate whole VOBs, "portions" of VOBs, a single or select files, a single or select directories or even select branches. Use ClearReplica to replicate multiple VOBs in to single VOBs, single VOBs to multiple VOBs and replicate VOBs to other VOBs within the same ClearCase region. These options allow more flexibility to create on-line backup VOBs and staging or distribution VOBs.

ClearReplica is licensed differently than ClearCase Multisite in that ClearReplica License pricing is not a factor of how many VOBs are replicated or the number of users of those VOBs. ClearReplica is licensed per location, therefore the cost is the same to replicate one VOB with one user from Atlanta to India as it does to replicate 100 VOBs with 300 users from Atlanta to India. Sites can in many instances replace hundreds of Multisite licenses with one or two ClearReplica Licenses. You simply need one license at each site if development is performed at both sites, or a single license at one site if the off-site location is just for backups or disaster recovery. This relaxed licensing results in huge upfront cost savings over traditional Multisite.

Some restrictions that exist in ClearCase Multisite are relaxed in ClearReplica. For instance, developers can work on the "same" branch at both locations for there is no Multisite mastership restriction. Geographically disjoint development teams can still work on separate branches and this is still the recommended method.

Use ClearReplica for geographically distributed development teams or use it to provide a hot backup to recover lost versions in a fraction of the time. Use ClearReplica to automatically distribute code or binaries located in a directory in a VOB without having to use the bandwidth of replicating the whole VOB. Replicate portions of the VOB to teams all over the world or across the hall. Simply install and configure ClearReplica on top of a ClearTrigger installation and get started!

Technical Requirements

ClearReplica simultaneously supports Window, Linux or UNIX.

  • ClearCase: All versions, starting ClearCase 3.2.1
  • Windows: 2000, XP, Server 2003, Server 2008, 7
  • Linux and UNIX - all kinds: Suse, CentoOs, Red-Hat, AIX, Solaris, HP-UX and Solaris X86

Trial version includes full functionality, but includes license splash warnings. Try as long as you like, purchase when you are ready.

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Replicate the whole VOB .. or just a poriton of a VOB...

Relaxed Mastership allow for development from different locations on the same branch at the same time...

Replicate from VOBs to even non-ClearCase hosts and filesystems...

Replica from one VOB to many VOBs ... or even from many VOBs to one VOB...

Split and Join VOB portions...

Replicated just certain branches, files, directories or label data... Only send out what you want others to see...

Less expensive then ClearCase Multisite.

Fixed-cost... Licensed per "location" not per user or per VOB..

Fully encrypted packets can be send via FTP, SFTP, RCP, MQSERIES, sneaker-net, email, network copy, and many moe methods...

Replication Triggers allow for automate remote installs and deployments... even to machines with dynamic IP addresses...

Choose the VOB data you want replicated and to where...