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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both test lab Domain controllers need initial synchronisation

Im trying to setup a test lab for our 2008R2 AD environment but am having trouble getting the domain controllers to start. If I just start the PDC with all FSMO roles (DC01) it gives an error saying ...
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1answer
59 views

How to replicate domains from different forests

I have 2 domains each in a different forest with transitive trust... Now, I am asked to do replication between them. My question is.. is that possible? if so how can I do that? any clue? I've made ...
5
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1answer
71 views

Windows Active Directory backup to a file

How can i take a complete backup of windows Active Directory into a single file and is it possible to restore this AD backup to another server? I cannot use active directory replication now, because ...
0
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1answer
29 views

Server 2008 R2 Replication Issue

I am trying to figure out why my Server 2 which is a domain controller is getting an error saying "Access Denied" when I am trying to access group policy management. I have checked and it is giving ...
0
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1answer
107 views

What happens to read/write operations during automatic client failover in MongoDB Replication

We have setup a 3 node replication set configuration for MongoDB. I want to know what happens to read/write operations during primary switchover. To be more explicit, few read/write operations were ...
1
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1answer
91 views

DNS Active Directory Zone Replication Scope (Forest vs Domain)

When I create a new Domain Controller with dcpromo then the wizard will also add a DNS Role to the server because the first domain controller must be the global catalog server for the forest. After ...
3
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1answer
43 views

Two folders synchronization (1 way sync), one in intranet the other one in extranet [closed]

I have one server in intranet (joined to domain, accessible via domain account) and the other one in extranet (not joined to domain, accessible via hopping station using a local account). Shared ...
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1answer
27 views

Are there any two-bay hardware bit/block level replication devices (perhaps RAID-1)? [closed]

Here's what I'm hoping to do: Have two drives in a hardware bay that can be pulled from the front without dissassembly Read and write to it as a single (NTFS) disk Be able to pull either drive and ...
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2answers
134 views

MongoDB automatic failover between 2 data centers

If I deploy a MongoDb replica set across only 2 data centers, if one entire data center fails, can there be automatic failover to the other data center? Consider the situation where 1 data center has ...
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0answers
122 views

DFS-style Replication for Samba?

I've been snooping around here for a while, and it looks as if glusterfs might be the answer to my question. However, I am fairly new to this, so a sanity check would be much appreciated! My setup is ...
0
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0answers
13 views

Data is re-inserted when replication is done

I have a transactional publication done between two databases on different Virtual machines connected with a network. I noticed that for some reason Every time replication is happening (which is every ...
2
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1answer
264 views

SQL Server Replication only for Enterprise Edition? Does it require Enterprise on both sides? Other solution?

My situation: I've been looking for an option of data replication for my SQL Server (I'm not expert on it, I should say it - neither on English Language). I've seen a few options, like Log Shipping ...
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0answers
20 views

Testing VMware replication on the same storage

We have two sites setup with VMware Site Recovery Manager (SRM) using VMware Replication to synchronize VMs. I need to validate the procedure for the site switch-over but I can use only one site. My ...
0
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1answer
120 views

OpenLDAP: Why would you ever use refreshOnly for replication?

I'm reading about OpenLDAP replication and I don't understand why you would use refreshOnly mode vs. refreshAndPersist mode. I've tried to do some searching online, but wasn't able to find any ...
0
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0answers
263 views

Linux LVM replicated Volumes

I am migrating storage arrays, on two sites.The DR site has synchronous block replication from main site that will be cut during the migration, however once the volumes are migrated the replication ...
1
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0answers
30 views

Asynchronous database replication solution PostgreSQL [closed]

We have an application Client (Android) -> API (PHP) -> Database (PostgreSQL) that controls flow of people on big events (clubs, wedding parties, academic meetings etc...), that runs over the internet....
2
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2answers
485 views

Why does MySQL Galera not replicate the user table?

I am running a 3 node MySQL 5.6 Galera Cluster. Everything is in sync and looks fine, but as I just found out the user table was not in sync. One particular user was not present on the other nodes ...
0
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0answers
183 views

Why is it not possible to mount a replicated gluster volume with one Gluster server?

I am running 2 glusterd on individual machines connected by private network. It apears that I can only mount the bricks if both deamons are up, otherwise it failes. As I am pretty new to glusterfs, ...
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0answers
498 views

Redis Multi-Master Replication

Scenario: We have two datacentres which run concurrently (both serve traffic). Each has it's own entire stack of infrastructure, so it can operate without the other being up. That said, we would ...
0
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1answer
1k views

repmgr - after a failover switch, both nodes act as a master

I have a two node PostgreSQL cluster configured through repmgr. The database topology looks like this: db1 - 10.10.10.50 ( master ) db2 - 10.10.10.60 ( standby ) wit - 10.10.10.70 ( witness ) The ...
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0answers
32 views

GluserFS - data out of sync

I have a glusterFS master - slave geo-replication. The data is out of sync and I would like to do a full sync (without having to do the full copy again -> 6.4 TB over network). The glusterFS version ...
0
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1answer
113 views

Set up keepalived for MySQL Master-Master replication [closed]

I managed 2 mysqld processes that listen for connections on different ports- 3306 and 3307 on localhost. I set up MySQL Master-Master replication. And now I want to set up keepalived for MySQL Master-...
2
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1answer
445 views

CouchDB replicate ALL databases?

I have a CouchDB I'd like to replicate to another server in order to do backup dumps without taxing the production server. The production CouchDB has a varying number of databases and I'd like to sync ...
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1answer
62 views

Filtered master-master replication-is it possible?

I got task to configure I think some sort of monster. My boss want to have two mysql servers. Let's say serverA and serverB have databases db1,db2,db3,db4. He wanted that serverA will be master for ...
0
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1answer
179 views

Skip failing statement in galera multi-master: Duplicate Column, wsrep_local_state: 2

After a Schema-Change on which I have missed out to take care about replication, I now have one Server not synching anymore, as it tries to alter the table which already has been taken care of (Server ...
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0answers
12 views

MongoDB with ReplicaSet perform updates / compact

I have a MongoDB in ReplicaSet with 1 primary, 1 secondary and 1 arbitrer. I'm doing an heavy update operation on a huge collection (more than 2.5M records), this operation will decrease the ...
0
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1answer
614 views

Authentication in a Mongo Sharded Cluster

I have a mongo shared cluster and replica sets: The ShardA Replica set: A1. 10.77.14.241 A2. 10.77.14.242 AA. 10.77.14.243 Arbiter Some parameters of /etc/mongod.conf: #bind_ip=127.0.0.1 auth=...
8
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2answers
107 views

Is there a difference in bandwidth consumption between a RODC and RWDC?

My organization has deployed 2008 RODCs on multiple seagoing platforms. The idea was to extend our shore-based domain onto our ships to better control security policies. RODCs were selected with the ...
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3answers
203 views

Is it possible to move MySQL to different hosting using replication?

I am considering switching to a new hosting provider and I would like to know if it is possible to achieve database (MySQL 5.6) migration without a huge downtime (= time to copy tens of GB of DB ...
0
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1answer
66 views

How do you sync ipset sets across two machines?

I would like to replicate IPSet sets from one machine (server01) to another machine (server02) using rsync or btsync or something similar. Is that possible? If so how do I do it? This is a redundancy ...
2
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1answer
3k views

Can't config replica set using MongoDB 3

I'm trying to create a replica set in MongoDB version 3.04. I followed this tutorial and getting the next error while trying to add nodes using the primary server: vacrep:PRIMARY> rs.add('server ...
0
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1answer
1k views

MySQL table only replication (Master->Slave)

I've set up two servers (one master and one slave db). I want to synchronize one single table of a whole database live (or with a delay of up to 5 minutes) in only one direction. I wanted to try the ...
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2answers
53 views

How to replicate application in load balanced infrastructure

AWS use AMI (Amazon Machine Image) to copy the application server whenever new node (server) is deployed. How that work ? What sort of image is that ? What are other ways to do replication of ...
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0answers
56 views

mysql replication stops without errors

I have this issue with master to master replication setup. Replication stops without errors, but when I make: slave stop; slave start; it is working again. mysql --version mysql Ver 14.14 Distrib 5....
4
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0answers
93 views

all dfs replication groups failing at the same time

We have 2 pairs of fileshare servers. All servers are virtual Windows 2008 R2. Each pair is replicating over a WAN. Occasionally all DFS replication groups fail at the same time. I could not find any ...
0
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2answers
246 views

OpenLDAP proxy : caching credentials in case Active Directory master unreachable

I'm setting up a Debian server in my company where users are managed in an Active Directory. I'd like to authenticate users with AD but I'm thinking it would be better, if feasible, to have a local ...
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2answers
330 views

How to open Hyper-V Manager in Hyper-V Server 2012?

In Windows Server 2012, to open Hyper-V Manager, in Server Manager I would just go Tools >> Hyper-V Manager. How do I open Hyper-V Manager in Hyper-V Server 2012? I want to allow replication to this ...
0
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1answer
154 views

dfs replication verification

Was wondering if there is a way to verify every single file from the source server is replicated over to the secondary server. I understand there's a command get-dfsrfilehash that can verify the files ...
0
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1answer
1k views

Server returned 'request expired' less than 0 seconds after request was issued, but it shouldn't have expired for at least 600 seconds

When I click save & restart VMWare Replication Appliance VRM service: Getting this error Error applying startup configuration: Server returned 'request expired' less than 0 seconds after request ...
0
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1answer
171 views

Cassandra NetworkTopologyStrategy

I would like to configure the following multi-datacenter Cassandra cluster: DC-EUROPE has 3 Cassandra nodes (1.1.1.1, 1.1.1.2, 1.1.1.3) DC-ASIA has 3 Cassandra nodes (2.2.2.1, 2.2.2.2, 2.2.2.3) Each ...
4
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1answer
47 views

7-Mode snapmirror status post link change

In a Netapp with a snapmirror relationship to another Netapp in 7-mode, what are my options of checking replication performance through Data Ontap? We upgraded the link and want to know how snapmirror ...
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1answer
153 views

MYSQL replication - Security suggestions on replicate over the internet [closed]

I'm going to launch a new web service, but i have few funds to start this business. I was taking a look at OVH Dedicated Infrastructure servers, but such a service costs at least 250 $/month, too much ...
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0answers
407 views

Unable to edit Account Options with Delegate AD access (Access Denied)

We allow the IT services in other countries to manage certain parts of their AD/OU via Delegate Control. Under one Country OU, the delegate rights to edit Account Options are no longer working. This ...
1
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1answer
520 views

Can't connect to MySQL 5.5 with SSL

I am trying to get MySQL SSL replication setup for two brand new RHEL 6.6 x64 servers. I have replication working without SSL, but I can't get it set up with SSL, and can't connect directly using SSL ...
0
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1answer
1k views

Windows Server 2003 AD Replication error 1864

Quick question on Active Directory replication. The AD topology is simple: Hub site and 10 Branch sites. I have one connection object between Branch "A" DC and Hub DC in Active Directory Sites and ...
1
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2answers
155 views

Location dependant dns redirection

I have a corporate network with two sites. Each site has its own domain controller with dns service and both domain controllers are servicing the same company.net domain. We have an mpls network set ...
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0answers
87 views

Not received replication information orphaned domain controller win 2008 R2

All 3 our domain controllers in 3 different sites keep generating the same active directory error. This directory server has not recently received replication information from a number of ...
3
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1answer
817 views

When and how should we shard MongoDB when we are bound to physical machines?

We maintain a search service that serves data from MongoDB. Our Mongo production instance is arranged in a 4 node replica set across four physical servers. The database is comprised of several small ...
2
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1answer
276 views

remote Powershell script Scheduled task

I am having trouble running a Powershell script as a scheduled task. The script remotely logs into two Hyper-V hosts, queries the replication status and emails the result back to me. The script works ...
2
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1answer
1k views

Mongo secondaries stuck at startup state

I have a MongoDB replica set with secondaries that won't make it past the STARTUP state. The database is large but they should have moved to STARTUP2 by now. The correct ports are open as I can ...