Exchange server 2007 alternative to standby cluster. In contrast to lcr, where recovery is a fully manual process, recovery in a ccr environment is fully automatic. Exchange 2007 ccr in failed, seeding, or suspended state. Suspendstoragegroupcopy identity ex1\storagegroup1 standbymachine panyabc. Beforeyou resume or update the storage group copy, copy the database and the log filesmanually to the passive node. Getstoragegroupcopystatus to confirm that it is suspended. Exchange 2007 ccr database copy status becomes suspended. With this new method, exchange 2007 cluster servers are handled just as any other exchange server. Exchange 2007 ccr cluster fails to reseed after an outage the.
Introduction as you may already know microsoft has released a great new feature in exchange 2007 sp1 called standby continuous replication to extend recoverability of exchange and add site resiliency. Replication scr is a new high availability feature in exchange server 2007 sp1. Scr extends the existing continuous replication features and enables new data availability scenarios for exchange 2007 mailbox servers. Next step is to reseed the storage group copies, so that the ccr node gets up to date replicas of each the active databases. Evault, a seagate company, makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. I tried to reseed using the exchange management console and the same problem occured after about 16 hours of healthy status. As per theveritas netbackup for microsoft exchange server administrators guide, upon asuccessful restore of an exchange 2007 ccr cluster, you need to reseedresumestoragegroupcopy and then resume replicationresumestoragegroupcopy. 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. An exchange server 2007 ccr cluster uses a cluster quorum. Check my article for upgrading non clustered exchange servers to sp2. Replication service an overview sciencedirect topics. Symptomsdpm server no longer would run backup on passive node of cluster. Cluster continuous replication ccr or single copy cluster scc. A far less obvious example is the limited support that microsoft permits for using the 32bit version of exchange 2007 to run test servers to try out exchange 2007 clusters scc and ccr, even though the 32bit version is only provided for the standard edition of exchange 2007 that doesnt support clustering.
This can be done using the exchange management shell and when speaking exchange 2007 sp1 the exchange management console emc ui. Setting up local continuous replication in exchange 2007 it pro. In my environment i have exchange 2007 sp2 with 7 dbs in a ccr configuration. In this article, well use the emc ui, so launch the emc. Recovering an exchange 2007 cluster using the recovercms switch. Exchange 2007 ccr scr replication issue logs no truncating. I have no option in the console to reseed, only option is suspend storage group copy. We have an windows 2003 activepassive cluster with exchange 2007 sp1 with ccr scr replication. How does quest migration manager migrate mail to exchange. An error can occur with exchange server 2007 ccr clusters when trying to move the clustered mailbox server between nodes. Continuous replication an overview sciencedirect topics.
Exchange 2007 database clustering and high availability features. Since theres no documentation available on how this is done in a step by step fashion, i thought you would like it covered here on as chances are youll. To overcome this i had to manually reseed the scr target. Clustered mailbox server an overview sciencedirect topics. Exchange configuration an overview sciencedirect topics. I am trying to reseed the passive cluster, which i have had to do several times with exchange 2007 rtm. Reinstalling the cluster nodes in an exchange 2007 ccr. Now that i have installed sp1 on both cluster members and run the setup upgradecms command, the updatestoragegroupcopy command fails both from the mc and the ms as follows. See announcing the rerelease of exchange 2007 service pack 3 update rollup 3 v2. I used update storage group copy with the option selected to delete any existing log. Two nodes node1node2 running an exchange 2007 ccr cluster named ccrmbx. If a disk fails and has one or more database copies on it, exchange can reseed to another spare disk if available through the replication service.
You dont have to delete the update rollups manually. You cannot reseed the logs to a passive node on a ccr cluster. Use windows explorer or another tool, such asxcopy. Rollback the ccr mailbox server hosting the passive database copies and any scr target mailbox servers to the previously installed version e. Evault software microsoft exchange plugin version 6. Standby continuous replication in exchange server 2007. Pierre bijaoui, juergen hasslauer, in designing storage for exchange 2007 sp1, 2008. Due to problems with one node, i evicted it from the cluster and rebuilt it, reinstalling exchange using the custom install passive node setup. The iops of my storage went up, so my users would notice a performance impact if this was performed during business hours. After restoring a ccr cluster, replication is suspended.
Both are configured as scr targets for ccrmbx the reason being, when i failed over, i wanted to have dr1 and dr2 running as quickly as possible as a ccr cluster, otherwise id need to fail over to cms to dr1 and then reseed which. How to reseed passive node of exchange 2007 ccr cluster i recently ran into a situation where the database and transaction logs on the passive node of my ccr cluster became out of sync. Beforeyou reseed and resume replication run a full backup. Id like to dismount the active, clean everything i can from the active copy, then perform a manual reseed. Exchange server 2007 troubleshooting database, storage group, and information store service issues topic last modified. The exchange information store service implements the store writer. You can configure lcr on exchange server 2007 either via the. Shared resource required to handle failover and function with the cluster plugin. Jul 08, 2008 recently i was faced with the task of reinstalling the exchange 2007 mailbox server role as well as the operating system on each node in a ccr based mailbox server setup. Standby continuous replication scr is the big new feature for exchange highavailability.
In exchange 2007 an exchange virtual server is now called a clustered mailbox server cms. Ccr is a clustered solution that eliminates the single point of failure that exists in traditional exchange cluster setups. Exchange 2007 ccr cluster continuous replication dr support dr on ccr. Wherein our hero battles exchange 2007 admin rants, useful 12122011 so, youve got an exchange 2007 ccr cluster set up and all is well in the world. I checked the backup server and found no backups in progress, so i figured the error was a phantom and tried manually removing all the files from. The normal practice is to locate the file share witness for an exchange server 2007 ccr cluster on a hub transport server in the same site or data center as the cluster nodes, or the same data center of at least one of the nodes in a geocluster model. The updated exchange 2007 sp3 ru3 has been released. How to move the file share witness for an exchange server 2007. Getstoragegroup id vip data after the problem that caused the selection from microsoft exchange server 2007.
If that fails manual attention by the administrator is required, possibly to reseed the copies. Use the updatestoragegroupcopy cmdlet in the exchange management shell to perform a reseed operation. Reinstalling the cluster nodes in an exchange 2007 ccrbased. It uses continuous replication also used by lcr and ccr to replicate. Seeding is required under the following conditions. Event id 2059 is logged after a successful restore on an. This is similar to the functionality we have with exchange 2003 with the setup disasterrecovery switch with a standalone system. Starting on node1, all cluster resources are online.
Exchange 2007 mailbox server clustering simple talk. Exchange console under mailbox reports copy status of all storage groups as not configured. Using the same continuous replication engine in lcr and ccr, scr provides more dr options by bringing in siteresilience. A consulting group enabled circular logging on the storage groups. Perform a switchover and rollback the remaining ccr mailbox server to the previously installed version e. I was working on testing the failovers from one node to the other. As its name implies, scr is designed for scenarios that use standby recovery servers. The steps for upgrading an exchange 2007 ccr to sp2 is different from the procedure that we follow for. Exchange 2007 ccr after reseeding storage group copies. The steps for upgrading an exchange 2007 ccr to sp2 is different from the procedure that we follow for non clustered servers. Potential for database corruption as a result of installing.
I suppose the best way to describe an exchange 2007 single copy cluster or. Ccr makes use of a type of windows clustering called mns. The steps to recover an exchange 2007 single copy cluster scc or cluster continuous replication ccr are the following. Exchange 2007 ccr,do i need to reseed the storage group and. I setup some metrics to test the effects of the environment while trying to reseed. When the ccr cluster is selected within qmm, the api installs all agents and directories to both nodes of the ccr cluster active and passive. It can take database as well as mailbox level backup and deletes the log files after comitting into the database. As you probably know, outlook 2003 and older use exchange public folders for their freebusy data and offline address book. Its just common sense that you need cl off in case you get congestion on the wire or somewhere else and log files on the active get stacked up. Upon finally resetting up scr for production i discovered that despite log files being shipped over ok, the database was not getting created.
I did a manual seeding of exchange 2007 on a exchange ccr cluster. When you configure the backup server, you have to use ccr clustername to take exchange backup. In this article, all exchange server 2007 server roles are discussed. Since were talking about restoring a cluster, many of you may think the. To check the state of the replication, open the exchange 2007 management console. Some of the database logs are not truncating due to issues with the replication process. We have an exchange 2007 ccr cluster that sits on two windows server 2008 enterprise nodes. Event id 2059 is logged after a successful restore on an exchange 2007 ccr cluster service solution. A manual move of the cms from the active node to another node is called. Finally when you resuming the storage group copyrun the following commands.
Deployments of exchange server 2007 can have two vss writersthe store writer and the replication writer. Getstoragegroup reports that all the sgs are clustered. The procedure to upgrade exchange 2007 ccr is the same whether you have a ccr without any service pack, with sp1 or with sp1 and any update rollups. To reseed the second copy of the databases, you should run the following. While deploying the ccr cluster gives hardware and volume resiliency, scr extends recoverability of exchange by providing a third offsite copy of the exchange mailbox. With exchange 2007 we have the ability to recover an exchange cluster with the exsetup recovercms switch.
I recently ran into a situation where the database and transaction logs on the passive node of my ccr cluster became out of sync. Sep 04, 2007 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. If it is not in a healthy state, it will fail over but the databases will fail to mount. When using a windows server 2008 cluster such as ccr dr, the dns. Exchange 2007 sp2 mailbox servers, create a ccr activepassive. To finish off this chapter, we wanted to talk a little about how you can recover an exchange 2007 clustered mailbox server both ccr and scc by using the exsetup. The last inspected log time shows the time before the database was dismounted to copy. We are having issue with our exchange 2007 sp1 cluster enviroment.
In case of the source mailbox server failure, you have to manually fa. It is not mandatory to place it on a hub transport server though. Qmm supports both scenarios where ccr cluster resides on the source or. Jun 28, 2007 standby continuous replication scr is a new feature being introduced in service pack 1 for microsoft exchange server 2007.
Tony redmonds guide to successful implementation book. Jul 21, 2008 next step is to reseed the storage group copies, so that the ccr node gets up to date replicas of each the active databases. The store writer is available on a single server, on the active cluster node of an scc, and on the active node of a mailbox server using ccr. All our sgs have the catalogdata file size as approx 5 gb, but one sgs catalogdata file size has increased to a max of 29 gb as of now and we are loosing free space. Whats occurring here is a process called seeding the database. So, i setup some metrics to test the effects of the environment while trying to reseed multiple dbs. How to reseed passive node of exchange 2007 ccr cluster. Cluster scc or a cluster continuous replication ccr environment. The most interesting new feature when it comes to ha is the ccr solution, which, like lcr, uses the new exchange server 2007 continuous replication technology. I have a 2007 ccr set up with 2 storage groups and one database for each storage group as follows. How to reseed passive node when circular logging enabled. Hence there is a big queue of backlog log files to be copied to the passive server. I have an exchange 2007 ccr environment and have 10 sg, now all my stores have db size as approx 100 gb with about 20 gb free space with the policy that we have implemented. This article will help you to manually seed the passive database and restart your ccr replication.
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