There's a company called Datacore that will do synchronous and asynchronous mirroring locally or to a remote DR site. It sits between your storage and the storage consumers, and the analogy I've used is that it sort of "prisms" all traffic to/from the storage and splits off a copy to send to your DR site.
Well worth looking into, although it's not cheap. Also, you do need to implement their recommended HA configuration unless you're willing to accept a single point of failure between your data and your servers. How close to real-time you get will depend on your bandwidth -----Original Message----- From: Sam Cayze [mailto:sam.ca...@rollouts.com] Sent: Wednesday, July 22, 2009 10:59 AM To: NT System Admin Issues Subject: RE: Data replication in real-time (or near real-time) Robocopy doesn't do block-level incremental syncs though (Delta Copy) :( (Unless something has changed) -----Original Message----- From: Stephan Barr [mailto:stephan.b...@bdtechnology.org] On Behalf Of lists Sent: Wednesday, July 22, 2009 10:57 AM To: NT System Admin Issues Subject: RE: Data replication in real-time (or near real-time) Robocopy with a scheduler ( System Scheduler is cool http://www.splinterware.com/) to run every few minutes or so works for me. Free/Cheap. It only copies changed files. Not good for containers (SQL, others) but great for individual files. Cheers. -----Original Message----- From: Tim Vander Kooi [mailto:tvanderk...@expl.com] Sent: Wednesday, July 22, 2009 10:50 AM To: NT System Admin Issues Subject: RE: Data replication in real-time (or near real-time) Finding a product (free or paid) that will replicate to no one existent disk space is going to be pretty tough. ;-) If you find someone who delivers on that promise please be sure to let us all know. TVK -----Original Message----- From: John Aldrich [mailto:jaldr...@blueridgecarpet.com] Sent: Wednesday, July 22, 2009 10:33 AM To: NT System Admin Issues Subject: RE: Data replication in real-time (or near real-time) Yeah...there were a couple different types of errors -- one was insufficient space for replication (the drive on the main server was low on drive space so it couldn't replicate...) and another problem was as you said that there were open files when it was trying to replicate. Unfortunately, those are show stoppers for us. We need something that will ignore locked files and replicate no matter what. -----Original Message----- From: Terry Dickson [mailto:te...@treasurer.state.ks.us] Sent: Wednesday, July 22, 2009 11:05 AM To: NT System Admin Issues Subject: RE: Data replication in real-time (or near real-time) So when you noticed that the data was not there did you check your DFS logs to see if there was a problem. We are currently using Windows 2008 and the only times we have seen this behavior were listed in the logs showing the DFS errors. The other reason was also listed in the logs, depending on the application that is creating/updating the file is file closure. DFS will not update a file that is still open, until the file is closed. -----Original Message----- From: Michael B. Smith [mailto:mich...@owa.smithcons.com] Sent: Wednesday, July 22, 2009 9:50 AM To: NT System Admin Issues Subject: RE: Data replication in real-time (or near real-time) The new DFS - DFS/R in Windows 2008 and Windows 2008 R2. ________________________________ From: John Aldrich [jaldr...@blueridgecarpet.com] Sent: Wednesday, July 22, 2009 10:50 AM To: NT System Admin Issues Subject: Data replication in real-time (or near real-time) We are currently using DFS to replicate between servers for D/R purposes. When attempting to access the DFS share, we noticed that sometimes the data is not there, depending on which server we access at the moment. I'm wondering what others are using for duplicating data between servers for D/R purposes? Is there some software out there that doesn't cost a bunch of money that'll duplicate the data in real-time or near real-time (within minutes of changes, I want the changes replicated.) Thanks! John-AldrichTile-Tools ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.392 / Virus Database: 270.13.23/2254 - Release Date: 07/22/09 05:59:00 ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
