Replication is the process of sharing information so as to ensure consistency between redundant resources, such as software or hardware components, to improve reliability, fault-tolerance, or accessibility.

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MD3660F & Remote Replicatoin

My company is exploring the option of remote replication using an existing MD3660F for our local backup server (active and already in use) -> offsite backup server (passive). Would you happen to know ...
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222 views

MariaDB replication not auto reconnecting

I've got a simple master-slave replication setup amongst two MariaDB 5.5 servers. The connection between the servers is somewhat flaky, causing disconnections every now and then. However ...
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127 views

How can I synchronize users in a master-slave server setup on debian squeeze?

I'm currently setting up a 1:1 replication of a linux server. To simplify the process of updating users and groups I considered changing the uids and gids on the slave server to have them all like on ...
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2answers
61 views

Switching SQL Server Replication Publication

I have a production database hosted on SQL Server 2008R2 Standard that is replicated to a second server running the same version of SQL server via a subscription to the production database. The ...
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1answer
506 views

Configuring openldap multimaster replication using cn=config

We currently have a single OpenLDAP server using the cn=config backend. We'd like to add a second OpenLDAP server and configure them for multimaster replication. What do we need to do to enable ...
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1answer
73 views

No replication between two DCs, tomestoned?

A site-to-site VPN has been down between two sites for around 120days, which means the DC at the peer site hasn't had any inbound replication from the main site DC. When does the DC object get ...
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104 views

Group policy central store replication

Should i care about replication traffic, generated by group policy templates central store? Do templates, stored there, replicate with client machines?
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1answer
110 views

Syncrepl support in Mac OSx 10.8 OpenDirectory

From Ryan Faas's article Apple's OpenDirectory does support overlays but I can't seem to enable the syncprov or accesslog overlays. Adding following block to slapd_macosxserver.conf turns the server ...
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36 views

Large scale file replication with an option to “unsubscribe” from a replicated file on a given machine [duplicate]

I have a 100+ GB files per day incoming on one machine. (File size is arbitrary and can be adjusted as needed.) I have several other machines that do some work on these files. I need to reliably ...
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1answer
147 views

Session replication in Tomcat

I have setup my cluster with one loadbalancer and 2 nodes with sticky session. I am using mod_jk for loadbalancing. I am having problem with proper session replication. I am using Tomcat 6. When I ...
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1answer
117 views

raid with replication

We are planning to buy two servers which will going to host an SQL database(PostgreSQL). The second server will work as a live replication of the first database server (hot standby). The question I'm ...
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2answers
2k views

DFS-R alternatives?

I was wondering what alternatives to DFS-R are out there on windows machines for real-time bidirectional file & folder replication? DFS-R requires active directory and a domain controller which I ...
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182 views

Server 2012 DFS New Member Issue

I am trying to add a new member to our DFS topology. We have 3 DCs (VMs - VMware) running Windows server 2012, two servers are located in or Primary site and the third at our DR site. Currently the ...
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124 views

mysql cluster node lost connection shutdown

I'm testing a mysql cluster with VirtualBox using several virtual machines: Each virtual machine (2 in total) has a mysqld and ndbd node. Plus there's a vm for the ndb_mgmd to manage the cluster. I ...
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94 views

MYSQL master master replication show master status show empty record

Environment: Windows 2008 R2, MySQL 5.051b Two servers: server1: 192.168.2.8 server2: 192.168.2.9 server1 > my.ini [mysqld] server-id = 1 auto-increment-increment = 2 auto-increment-offset = 1 ...
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1answer
66 views

Disable OpenLDAP replication

I set up openldap replication so that if my primary LDAP server were to die, I would have another LDAP server ready to use just in case. I used the directions on Ubuntu's site to set up the ...
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1answer
205 views

Error while setting up ldap replication

I'm trying to set up LDAP replication according to the directions on Ubuntu's site. I went through all the directions for setting up the provider without any trouble. But when I try to set up the ...
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1answer
46 views

MySQL replication as both master and slave (replication loop?)

I've got two MySQL servers, one as a master in the replication process and the other as the slave. I was wondering if anything bad would happen if I made the current master a slave to the current ...
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1answer
76 views

Failover server for SQL Server mirror errors after reboot

I have two Windows Server 2008 servers set up, both running SQL Server 2008 R2. One is used as a primary DB, the other as a mirror failover (two website DBs + ASPState for sessions). Everything works ...
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2answers
320 views

MySql server master-master seconds_behind_master jumps

I'm running a 4 servers master-master cluster of MySql. (2 servers version 5.1, and 2 version 5.5) While checking the slave status, i see the seconds_behind_master at 0, and half a second after i see ...
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2answers
107 views

With 3 production nodes, why Mongodb complains about even voting nodes?

I run a mongodb sharded cluster with 1 shard, 1 replica set (2 secondaries, 1 primary, 1 delayed slave). Frequently, the following message appears in the logs: [rsMgr] replSet total number of votes ...
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1answer
114 views

For a simple replication over 2 server computers, should I use glassfish replication or ubuntu replication, or something else?

I want to set up a simple replication or exact mirroring, using 2 server computers I just bought, for the following purpose: I want to set up some websites, which, by design, may eventually need to ...
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1answer
66 views

How to arrange a replication in mysql?

Here is my problem. I have a busy Drupal site struggling under high load. After applying all caches I see that, no surprisingly, database is the bottleneck. I have two servers to handle the site: A ...
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429 views

What does zfs receive -F do?

When I read man zfs for zfs receive I see -F Force a rollback of the file system to the most recent snap- shot before performing the receive operation. If receiving an ...
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1answer
63 views

How does AD decided when to enable SyncOnStartup for inbound replication partners

I have been playing with the MSAD_ReplNeighbor wmi class for monitoring AD replication. I have a hub and spoke, single domain topology where three DCs are in the spoke site. One holds all the master ...
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143 views

Openldap Mirror Mode replication failover

We have currently one master ldap server and around 400 slave servers which are partially replicated through that master.All openldap versions are same and 2.4.31 What we want is actually if master ...
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4answers
3k views

is ROBOCOPY a good form of backup as a tool?

seeing how it does not do a write verify unless scripted (or is it needed?) is it a decent option to dump a few folders to another server? i am just worried about whether the data, after being copied, ...
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699 views

AD Replication Errors / KCC - Between two Domain Controllers

I'm having quite an issue that began a few days ago. Let me just lay out exactly what happened - also I've inherited this environment, please keep that in mind. 1st Domain Controller - Windows ...
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44 views

MySQL - Adding another master to an already configured cluster

We currently have a MySQL 5.1 Cluster of two master servers. Eventually we would like to move to 5.6, while also adding 2 more servers. What is the best way to achieve this? This is what i had in ...
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43 views

Identical tables, different sizes?

I have transactional replication with updatable subscriptions going between a few SQL 2008 R2 servers (publisher is Enterprise, subscribers are Express). I need to add another subscriber, and come to ...
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4answers
3k views

DFS-R or WAFS for Syncing 1TB Files between remote sites

We have 1TB of files that we wish to keep in sync between three locations. This data consists of around 1.5 Million files which grows/changes at an average of 100MB/day. The first location is a ...
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1answer
49 views

Restore backup from SQL 2008 to 2008R2 with standby

We are looking to replicate our production database to another instance so that when reports are run, it doesn't slow down the application to the point of being barely usable. I had limited success ...
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2answers
1k views

What is the correct way to configure AD replication in a hub-spoke design

Our AD is a basic hub/spoke design. We have a headquarters in London, and remote offices. The remote offices are connected via VPN to HQ. We have 3 domain controllers at HQ, and one in each remote ...
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How to do replication of data on mysql?

i am trying to do mysql replication for my site database. i searched on internet but did not get proper solution for replication. i am looking to do replication on same server.
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2k views

Which binlog format to use for MySQL Replication?

Just about to start using MySQL replication and I'm wondering what kind of binlog format is the best to use? There's Row, Statement and Mixed. I'm going to be using 5.1.49. Row is winning at the ...
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5answers
1k views

Solaris to Linux conversion: Use VxFS or GFS?

We're a Solaris shop looking at RedHat Enterprise Linux and one of the things we're wondering is if we should keep Veritas Volume Manager + FileSystem or go with LVM+ext3 or RedHat's preferred cluster ...
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5answers
2k views

How can I rebuilt MySQL replication without dumping the master?

Our MySQL database has grown fairly large, and I am running with master replication. Replication is broken. I am trying to rebuild the second master without freezing up the first master in doing a ...
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3answers
212 views

MongoDB: two nodes & primary election

According to Mongo documentation in order to safely deploy a replication set, you need at least two active and one arbiter because election of the a primary needs the majorities of the votes. Let's ...
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2answers
52 views

Slave with more databases than master

I have two servers. Lets called ServerA and ServerB each has their own database server and web server. Those two servers are used to run different website. ServerA data is more important because it ...
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1answer
73 views

Percona xtradb cluster with asynch slaves

I have a Percona xtradb cluster set up with 3 nodes. Node 1 is also set up as a master with an asynchronous slave. When I make an update to Node 1, it is replicated to the cluster as well as the ...
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1answer
61 views

Migrating MySQL from one server to another via master-master replication

OS is Linux. I imagine that the process is something like the following: Set up master-master replication between old and new servers. Cut over the db ip on my app server from the source db to the ...
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656 views

Active Directory Replication Bandwidth Consumption

There are lots of articles out there describing how to architect your replication toplogy, and all the reasons why, and they all boil down to conserving bandwidth, and achieving a convergence time ...
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1answer
682 views

Exchange 2010 Mailbox Replication Service Error

We are repetitively getting: The Microsoft Exchange Mailbox Replication service was unable to process jobs in a mailbox database. Database: DB24 Error: Couldn't find system mailbox ...
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1answer
147 views

SQL 2005 replication not working

I am in the process of creating replication between 2 remote servers, server 1 is the distributor and publisher and server 2 is the subscription Server 1 windows 2003 server 192.168.10.1 connected ...
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87 views

Mutli-master file system replication with acceptable read performance

I am trying to configure replicated storage over three sites - each site having a full replica of a file system, using either GlusterFS, or XtreemeFS. This replica must be readable - very fast - ...
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323 views

Path to gpt.ini missing

I am seeing the 1030 and 1058 errors for a remote Windows Server 2003 domain controller. Specifically the 1058 error says: > Event Type: Error Event Source: Userenv Event Category: None Event ...
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261 views

Viewing the “Replication” tab for a replicated folder target in the DFS “Namespaces” node in the 2008 DFS console says replication “not configured”

On a server 2008 R2 box I setup a DFS folder folder in a namespace and then manually setup it up for replication in the "replication" node of the DFS console. Now when I go to the "Replication" tab ...
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1answer
291 views

Force replication of Netlogon

I have added a batchfile to the the NETLOGON directory for some start-up scripts. The script is tiny in size. I have waited hours for the files to be replicated to the other Domain Controllers but ...
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116 views

Copy Exchange Database from Passive to Active

I have a CCR running with a total of 6 servers 2 MB, 2HT, 2 CAS. I had a failure on active node this morning and everything failed to my passive server, i had some issues with the logs, as the werent ...
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1answer
2k views

Repadmin gives operational error 58

While testing some remote DC's, "repadmin /replsummary" ended with an error of Experienced the following operational errors trying to retrieve replication information: 58 - ...