Hello all,

Just wanted to draw a couple comparisons. First and foremost we at DH2i are very much Sanbolic Melio fans. We supply all of Melio FS and volume manager with our product (everything but applcluster). That said DH2i is more akin to the PolyServe SQL server solution pack and provides InstanceMobility® and QoS are at the instance level. All aspects of SLA management, mobility, patching, provisioning is at the instance level. We also provide a very easy to use migration tool call dxtransfer.

Sanbolic appcluster is all done at the db level and leverages detach attach in order to achieve DB mobility.

So what does this mean and what are the implications? Well for one you have to keep a very close eye to all dependencies at the DB level, logins need to be consistent, you need to ensure jobs won’t fail if you move it, how about encryption and keys? replication jobs?

All the issues that come with traditional attach detach.

Imagine a physical host with say 6 instances on it and 50-100 DB's per instance? If that host fails how complex is that on a failover scenario?

BTW DH2i's DxConsole installs ontop of Melio in about a 10 second install per node.

Happy to address any questions.

Regards and happy computing!

Carl Berglund

Director Sales DH2i