Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Greetings! We have a few Corosync+PaceMaker+DRBD clusters and a couple older Heartbeat+DRBD clusters. Our infrastructure is currently located in a single facility. We have the opportunity to establish a DR site in another data center over a high bandwidth connection (2-4Gbps). I am thinking of moving the standby cluster nodes to the secondary data center. One thing that concerns me is the greater possibility of split-brain scenarios. Currently our clusters communicate heartbeat through multiple paths: 1. The primary LAN link that users communicate through; 2. The DRBD link; 3. A dedicated cluster communication LAN. If we move the standby cluster nodes to the secondary facility, there will no longer be redundancy on the heartbeat links. Everything will go through the inter-data-center connection. This concept is a little worrisome. Should I be very concerned? Is there a way to minimize the risk of split-brain over WAN? --Eric Disclaimer - March 31, 2011 This email and any files transmitted with it are confidential and intended solely for drbd-user at lists.linbit.com. If you are not the named addressee you should not disseminate, distribute, copy or alter this email. Any views or opinions presented in this email are solely those of the author and might not represent those of Physicians' Managed Care or Physician Select Management. Warning: Although Physicians' Managed Care or Physician Select Management has taken reasonable precautions to ensure no viruses are present in this email, the company cannot accept responsibility for any loss or damage arising from the use of this email or attachments. This disclaimer was added by Policy Patrol: http://www.policypatrol.com/ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20110331/68219497/attachment.htm>