Hi.  When upgrading PP for Windows, it will require a host reboot.  You don't have to remove the current version (unless there is a hotfix applied).  If you have 5.3 SP1, you may directly upgrade to 5.5.  The change in bulk data copying behavior from 5.3 SP1 to 5.5 shouldn't be considered a problem.  It is a product enhancement.  In 5.3 SP1, we paused application I/O temporarily to do bulk data copy operations.  The "suspend" time was user configurable depending on the sensitivity of the application.  We decided to make an improvement in 5.5 to remove that and perform background copying with application I/O.  From a user's point of view, you wouldn't see a difference unless you were doing detailed I/O analysis.  During the bulk data copy (the Sync state) and after the synchronization (the TargetSelected and SourceSelected states), PPME continues to clone all application writes to the devices in the migration to keep them synchronized.  Synchronization stops after the migration is committed or aborted.  If you need more information, please let me know.  Thanks, Brion
Hello Everyone,  I am pretty new to this PPME thing.  I read the white paper on Powerlink, but kind of confussed. I have 3 Windows host in my environment. For which I am thinking to use PowerPath migration enabler host copy to copy the data from old drive (smaller LUN) to new drive (bigger LUN). I was thinking to use robocopy to copy of data, but I tried in one of my production servers, and to copy of 1 TB of data it took forever.  I read the PowerPath migration enabler host copy document. I had couple of questions 1) I know, I can start the copy at host level, but do I need to install any tool for this, provided that I need to install PPME license on the host. 2) Is it like, it pulls data from one LUN and copies to the new LUN on the same host. 3) What is the best transfer rate for this tool. Taking in to consideration, that I need to copy two 450 GB of LUN in to bigger LUN's of 800GB on the same host and one 1 TB of LUN to copy to 2 TB of LUN on another host. And I have 4 hours of downtime for first and for the other server its 6 hours.  Is their any easy step to follow for host based migration that I might be missing in this tool. Please correct me if I am wrong, do I need to have timefinder clone for this.   Thank You Rama
Help regarding PowerPath Migration Enabler Host Copy