Manually copying the offline database this method involves. In ccr, you can manually start a failover from the active cluster node to the. A database instance resource coordinating to each database created on the cms. We had an exchange 2007 ccr cluster where the passive node databases stopped seeding. This tip by microsoft exchange expert brien posey explains the log shipping process as it applies to all three types of continuous replication. Microsoft exchange 2007 ccr continuous cluster replication. How to reseed passive node of exchange 2007 ccr cluster.
There may be times where you need to seed one or more storage group copies in your ccr cluster. In contrast to lcr, where recovery is a fully manual process, recovery in a ccr environment is fully automatic. Seeding is the process of creating a consistent database copy on a dag. Disabled, failed, seeding, copying, stopped, and healthy. If there is any datacenter failover then his activation has to be manually performed. The log file xxxx for servername\your storage group is missing in the production copy. Incidentally, i keep wanting to call it continuous cluster replication instead of the official cluster continuous replication. You can use the procedure in situations where you determine seeding is required. Microsoft exchange dr and high availability features have evolved a. I want to configure exchange server scr is a standby server. Figure 1 illustrates the different exchange server 2007 roles in an example exchange server 2007. To check the state of the replication, open the exchange 2007 management console. If youre recovering an exchange 2007 server with the hub transport server role installed, and this is the only exchange 2007 server with this role installed, its recommended you run m.
After some investigation we noticed that the exchange replication service starts and a second or two later stops. When using continuous replication in exchange 2007, an operation that sometimes needs to be performed is a database seed. I recently ran into a situation where the database and transaction logs on the passive node of my ccr cluster became out of sync. During the update process, you will be prompted to delete any obsolete checkpoint files that are found in the passive copy of the storage group, and any existing database file that is found in the passive copy of the storage group. The cluster continuous replication ccr in sp1 has been enhanced by supporting redundant separate cluster networks for log shipping and database seeding. Seeding is the process whereby a database is added to a storage group copy.
Recoverserver with the donotstarttransport syntax since theres a few postrecovery steps that should be completed before this role is made. In exchange 2007 service pack 1, a new feature was introduced that allowed additional redundant networks to be added to a ccr environment for the purposes of log shipping and database seeding. Designing high availability with microsoft exchange server 2010. Automatic seeding requires that log1 be available on the source. Exchange 2007 exchange server 2007 provides or distributes its features and functionality through the five different server roles. Passive cluster node an overview sciencedirect topics. Moveclusteredmailboxserver cannot be performed if one or more of the server s storage group copies are in failed, seeding or suspended states. What is lcr, ccr, scc and scr introduced with exchange 2007. It discusses strategies and best practices on how to configure and optimize the disaster. I accidentally deleted an exchange 2007 clustered resource. In my opinion, exchange 2007 is an evolutionary step in providing a. A vss backup created on the passive cluster node can only be restored to the active cluster node.
Cluster continuous replication network design simple talk. Continuous replication is in a failed, seeding, or suspended state march 26, 2011 by paul cunningham 1 comment. This is not a checklist of differences between ccr and scr in exchange 2007, but. Mailbox, hub transport, client access, edge transport and unified messaging. First verify that the database is not replicating correctly getstoragegroupcopystatus or getmailboxdatabasecopystatus. Switch over is the same process of making the active node to passive node but the failover is manual. This provides capability for high availability, with ccr, and disaster recovery dr, with scr. Exchange 2007 ccr in failed, seeding, or suspended state. The last inspected log time shows the time before the database was dismounted to copy. Symptomsdpm server no longer would run backup on passive node of cluster. It never gets past the initializing part and we cant suspend the storage copy to do any manual reseeding. When i try to use the command line on exchange management shell. The first backup that is performed is referred to as a seed, and is a complete backup of. Continuous replication for this storage group is blocked.
Local continuous replication lcr is a singleserver solution that uses builtin asynchronous log shipping and log replay technology to create and maintain a copy of a storage group on a second set of disks that are connected to. Exchange 2007 mailbox server clustering simple talk. Lcr provides log shipping, log replay, and a quick manual switch to a secondary copy of the data. Seeding can be postponed for a new mailbox database copy, but. Ems process open exchange management shell on the passive node.
Generally speaking the installation of the service pack is very straight forward for normal exchange 2007 roles such as hub transport, basic mailbox, client access however when you get into the realms of looking at ccr upgrades things change a little and become a tiny bit more complex. Depending on the situation, seeding can be an automatic process or a manual process in which you initiate the seeding. You could also manually seed the database by copying the edb over prior. Here i decided that i was going to reseed the replication process for the first. You can perform seeding in microsoft exchange server 2007 by using the following methods. Sometimes these clustered resources are accidentally deleted using cluster administrator or failover cluster manager. Can i copy ex2010 databases physically before replicating them via a dag.
In exchange server 2007, continuous replication incorporates log shipping. I have exchange server 2007 ccr is the production server. In the article high availability in exchange 2007, several options in exchange server 2007. Exchange 2007\2010 database replication issues reseed. Exchange 2007 using vss to perform an online offline. Due to the size of some mailbox store, the updatestoragegroupcopy is the way to seed. This is not a checklist of differences between ccr and scr in exchange 2007, but a main one i thought all should be aware. Exchange 2007 ccr cluster continuous replication dr support. Sometimes its necessary to manually seed or add an exchange server 2007 database to a storage group copy. Automatic seeding an automatic seed produces a copy of a storage groups database on the target. Exchange 2007 ccr cluster continuous replication on this page i will explain how to install and configure ccr for exchange 2007 server. Exchange 2007 sp1 allows you to manually seed a storage group copy using the new update storage group copy wizard. How do you convert a ccr cluster of exchange 2007 from p to v in vmware. Pierre bijaoui, juergen hasslauer, in designing storage for exchange 2007 sp1, 2008.
Henrik walther, in how to cheat at configuring exchange server 2007, 2007. Integrating microsoft exchange server 2007 in a cisco. Exchange 2007 ccr cluster fails to reseed after an outage posted on may 18, 2010 by kevin peters i dont usually talk too much about exchange unless its related to ocs, but this issue was a bit of a pain, so i wanted to share in case it can save anyone else some time. Exchange 2007 ccr cluster fails to reseed after an outage. Can i copy ex2010 databases physically before replicating. We have two exchange 2007 nodes in a ccr environment. Shared resource required to handle failover and function with the cluster plugin. There is one ad site per dc location and since the ccr implementation is local to the primary site and no longer stretched, there is no need to also stretch the ad site for ccr between physical dc locations. High availability and disaster recovery features in. Exchange 2007 ccr scr replication issue logs no truncating. Im in the process to setup scr in my exchange organization and have a few questions regarding manual seeding process. This process is called seeding and it establishes a baseline in the replica. Installing, configuring and testing an exchange 2007. Complete public folder migration from exchange 2007 to exchange 2010.
Exchange server 2007 sp1 exchange server 2007 sp1 further enhances exchange server 2007 by improving the performance of existing availability features. Exchange local continuous replication seeding fails. Manually adding an exchange 2007 database to a storage group copy sometimes its necessary to manually seed or add an exchange server 2007 database to a storage group copy. Seeding is most often performed with the updatestoragegroupcopy cmdlet. Continuous replication is in a failed, seeding, or suspended state on exchcluster1db1. I am trying to reseed the passive cluster, which i have had to do several times with exchange 2007 rtm.
When exchange 2007 is installed on a cluster there are several exchange 2007 specific resources that are created. This is a very important point to keep in mind when you plan the recovery strategy of a geographically dispersed deployment of ccr. Java project tutorial make login and register form step by step using netbeans and mysql database duration. You cannot restore the backup data to the passive node. Exchange 2007 ccr scr replication issue logs no truncating showing 18 of 8 messages. The log files on the passive node quit being updated around january 2nd. Before we start talking about how to perform a manual seeding of a database copy, it would be a good idea to define the term seeding in terms of lcr. Learn to manually seed an exchange 2010 dag database in this tutorial. Exchange 2010 dag local and site drfailover and failback. This operation is typically performed as part of enabling replication, and infrequently it is performed as part of the process for recovering from divergence. General exchange 2007 ccr question general exchange 2007 ccr question sircam mis op. If it is not in a healthy state, it will fail over but the databases will fail to mount. Typically seeding is an automatic process, but in some cases manual seeding may be required.
If you suspect you have a replication issue or you did but have now resolve the problem and are ready to re seed your databases here is the process. The event log did not give us much information, only stating that the service started and stopped again. Offline defragmentation an overview sciencedirect topics. Exchange 2007 ccr reseeding failing solutions experts. Hence there is a big queue of backlog log files to be copied to the passive server.
Installing, configuring and testing an exchange 2007 cluster continuous replication ccr based mailbox server part 2 introduction in part two of this articles series we installed the necessary windows components, enabled and configured the majority node set mns quorum with file share witness as well as the transport dumpster on the hub. If you want to proceed, you must manually dismount the affected databases and. Figure 6 illustrates the use of microsoft exchange server 2007 with a local ccr and remote scr implementation. Seeding is done with the powershell cmdlet updatestoragegroupcopy. We have an windows 2003 activepassive cluster with exchange 2007 sp1 with ccr scr replication. If any more information is need in ccr please inform us, we will.
Exchange server 2007 clustered continuous replication. Once seeding got completed the log file created in the active server. With specific networks dedicated to log shipping and database seeding, the remaining network is dedicated to its task of servicing client communications. Find answers to exchange 2007 ccr reseeding failing from the expert community at experts exchange. Exchange server 2007 log shipping and continuous replication. How do you convert a ccr cluster of exchange 2007 from p.
Manually adding an exchange 2007 database to a storage. Before we start talking about how to perform a manual seeding of a database copy, it would be a good idea to define. You can perform seeding in microsoft exchange server 2007 by using the. Before failing over in a ccr environment, it is highly recommended that you verify that the status of the replication is in a healthy state. In case of the source mailbox server failure, you have to manually failover. Manually seeding a database isnt common, but its good in a pinch. Ccr running in production site win server 2003 enterprise exch 2007 sp1. An exchange server 2007 ccr cluster uses a cluster quorum configuration called node and file share majority this means that the cluster has two servers that are the cluster nodes themselves, and a third server that is the file share witness server. I did a manual seeding of exchange 2007 on a exchange ccr cluster. When setting up local continous replication on an exchange 2007 servers larger database, the wizard consistently fails with a message along the lines of.
302 1533 487 1109 1152 972 435 221 1404 192 1240 413 317 88 1577 299 1116 631 286 857 994 806 758 25 641 1226 785 916 516 257 249 486 1023 514 554 1062 50 931