Coho Site-to-Site Replication


Anyone that knows me well, knows that I have a unique history with Business Continuity and Disaster Recovery software as well as its practical use in business. In case you didn’t know, I used VMware SRM along with NetApp to recover from the 2011 Tōhoku earthquake and tsunami in Japan. In areas with natural disasters, it is becoming increasingly imperative but now also relatively common for companies to require or even demand their storage products support remote replication. Companies will use it either for a simple reason, such as shipping backups off-site or the more complex use case of disaster recovery, or both. It’s extremely convenient and easy to use when implemented properly.

That said, a common ask of us from customers here at Coho has been some form of site-to-site replication. We definitely didn’t design this as a “me too” feature. The technology has been built into the product since day one. We use synchronous replication instead of technologies like RAID to store redundant copies of data across the independent backend storage nodes. We leverage an asynchronous version of this for the remote replication feature. There was a lot of thought that went into the other components of our implementation to make it easy to use and enterprise fully-featured from the get-go.

Here are some of the key features of our replication release:

  • Asynchronous, periodic, snapshot-based replication
  • Active – Active site support
  • Virtual Machine granularity
  • Encryption
  • Compression
  • Bandwidth throttling
  • Simple UI with one-time setup and very easy configuration
  • Flexible replication schedule

* I’ll also add to this list that we’ll be introducing support for VMware’s SRM via a SRA (Storage Replication Adapter) in the very near future, so be on the lookout for information here and elsewhere on that.

If you’d like to read more details about the release, head over to the official Coho blog and read Doug Fallstrom’s (Sr. Director of Product Management) post on this topic.

Speaking from experience, site-to-site replication gives us another must-have enterprise grade feature, further solidifying Coho’s place at the cutting edge of new storage technologies… and this is only just the beginning!

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