Hot Dog!  We had an HBA issue on one of our SQL DB servers in the Polyserve Matrix last night and Polyserve saw it, notified us, and failed the instance over correctly and shut down access to the errant server.  Total down time was about 30 seconds.  The instance it moved only had two large databases on it but it worked.  The client application which was coded to retry the connection to the DB if it receives an error code also worked correctly and then retried the transactions and the client never knew there was an outage.  We had a complaint of performance for a short time but I will take that over why is it down any day!

I was a bit worried about the notifiers because it uses a batch file and BLAT.exe (a command line SMTP server).  We weren't able to test it very much during our install and were cautious about using it this way. 

So far so good with Polyserve!