Maybe to restate: 2 datacenters Mutiple MBX servers/CAS servers per datacenter.
If I have two copies of a DAG in a Datacenter, then it will fail over within the datacenter just fine. If I only have one copy of a DAG in the datacenter, and I reboot a MBX server, or whatever, will the DAGS on that MBX be able to fail over to the secondary datacenter with little to no admin action, and with little to no user outages? ________________________________ From: listsad...@lists.myitforum.com [mailto:listsad...@lists.myitforum.com] On Behalf Of Stringham, Steven Sent: Monday, August 05, 2013 4:21 PM To: 'exchange@lists.myitforum.com' Subject: [Exchange] Exchange 2010 - two datacenters - # of dags We are redoing our SAN and Exchange (business merger stuff). The connection between the primary and secondary datacenter is 200mb at about 35ms. We are looking at about 8tb of exchange data right now. I am presently using 2 copies of the DAG at the primary and 1 at the old secondary datacenter. With this merger, we are discussion whether I need two (2) copies in the primary datacenter or can I get away with only one (1) in both the primary and the secondary datacenter. We are also looking to split it up to 4 MBX servers per site, with a (or pair) LB per site. What are the drawbacks of only 1 copy of the DAG at a datacenter, with the secondary only 1 copy? What happens with failover, etc.? How quickly can I fail over to a secondary site when only 1 server goes down? Thoughts? Are we nuts? Thanks Steven Stringham ________________________________ For more information about Lewis and Roca LLP, please go to www.lewisandroca.com<http://www.lewisandroca.com/>. Phoenix (602)262-5311 Reno (775)823-2900 Tucson (520)622-2090 Albuquerque (505)764-5400 Las Vegas (702)949-8200 Silicon Valley (650)391-1380 This message is intended only for the use of the individual or entity to which it is addressed. If the reader of this message is not the intended recipient, or the employee or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the sender of this E-Mail by return E-Mail or by telephone. In accordance with Internal Revenue Service Circular 230, we advise you that if this email contains any tax advice, such tax advice was not intended or written to be used, and it cannot be used, by any taxpayer for the purpose of avoiding penalties that may be imposed on the taxpayer. ________________________________ For more information about Lewis and Roca LLP, please go to www.lewisandroca.com<http://www.lewisandroca.com/>. Phoenix (602)262-5311 Reno (775)823-2900 Tucson (520)622-2090 Albuquerque (505)764-5400 Las Vegas (702)949-8200 Silicon Valley (650)391-1380 This message is intended only for the use of the individual or entity to which it is addressed. If the reader of this message is not the intended recipient, or the employee or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the sender of this E-Mail by return E-Mail or by telephone. In accordance with Internal Revenue Service Circular 230, we advise you that if this email contains any tax advice, such tax advice was not intended or written to be used, and it cannot be used, by any taxpayer for the purpose of avoiding penalties that may be imposed on the taxpayer.
