Hey Tom -
If you propate over an IP network on the front end of the head, then yes there is a performance penalty. If you have the disk shelves handle the propagation, then you can do some interesting things which do not create a performance penalty. But then you're talking about putting intelligence down into the disk shelves themselves.
/Christian Adams
-----Original Message----- From: tkaczma@gryf.net [SMTP:tkaczma@gryf.net] Sent: Monday, March 22, 1999 4:47 PM To: toasters@mathworks.com Subject: RE: NetApp/Auspex killer?
On Mon, 22 Mar 1999, Mohler, Jeff wrote:
Your DR solution should PUSH data out constantly, not request it remotely every 60 seconds, then if a snapcopy fails for that period, it
gets
thrown away on the remote side...two lost minutes of data.
That's true for your application, but I don't want to mirror my disks across the country even every 60 seconds. Once every couple of minutes or hours is perfect for me. If you truly mirror your disks the latency associated with data propagation will kill the performance.
Tom