16
votes
Windows Server: Replicate folders without DFS?
DFS is usable but a) cause issues working with open files b) Hyper-V, SQL Server and Exchange has no DFS support c) can't avoid a spit-bran issue.
When multiple users works with the same file that ...
- 3,918
14
votes
Windows Server: Replicate folders without DFS?
DFS-R requires active directory, so that option will not be available to you. As yagmoth mentions in his comment, you could use robocopy
For example: robocopy /mir /mot:10 would run a mirror every ...
- 7,905
9
votes
Windows Server: Replicate folders without DFS?
There are two options that I have used and work relatively well.
Peersync - http://www.peersoftware.com/products/sync-backup/peersync-for-servers.html
Is licensed however works really well, very ...
- 9,588
9
votes
Accepted
Data missing after ZFS replication on FreeNAS/TrueNAS
The difference can be related to different pool or dataset configuration (mirror vs raidz, ashift value, recordsize, compression, etc). If you sent data via send/recv, no data should be lost ever. ...
- 50.7k
8
votes
Accepted
How do i measure redis replication delay?
Given results from an INFO replication command like this:
slave0:172.16.101.23,6380,online,424821
master_repl_offset:424827
You can tell that slave0 is behind master by 6. This is the difference ...
- 134k
8
votes
Is DRBD the only viable block replication solution for Linux?
Well, there's also MARS (Light). According to the documentation this widely used at German provider 1&1
- 325
7
votes
Accepted
ZFS on Linux (ZoL) and realtime replication
I recommend a clustered dual-node shared SAS setup or continuous asynchronous replication on 15 or 30-second intervals. The latter is good for continuity, while the latter provides a way to obtain ...
- 198k
7
votes
PostgreSQL hot standby cannot start because max_connections is a lower setting than on the master
This occured because both my master and standby were initialized from a pg_basebackup that was taken on a cluster that indeed had max_connections = 2000. Details of the situation and two remedies are ...
- 653
7
votes
SQL Server Failover strategies
In SQL Server 2014 Standard Edition, your only built-in option for automatic failover without shared storage would be database mirroring.
If you upgraded versions to SQL Server 2016 Standard Edition,...
- 4,425
6
votes
Accepted
What does an infrastructure that hosts an FTP server with HTTP access look like?
Typically the FTP server and Webserver are not running on different computer systems but both services are running on 1 single host.
Both the FTP service and web service point at the same directory ...
- 80.3k
6
votes
Accepted
HyperV 2016 storage redundancy on non-redundant SANs
You can try using StarWind VSAN (Free) to create a highly available (HA) distributed block device between both Hyper-V hosts on top of an existing SANs attached directly to both servers. Since ...
- 5,115
6
votes
Accepted
Failover Cluster Disk Replication
Storage replica supports either Cluster-To-Cluster replication or Stretch Cluster with shared storage. Technically you should be able to configure it, if you have separate shared storage connected to ...
- 5,775
6
votes
ZFS: Handling massive no. of concurrent RW operations and failover
Neither ZFS nor BTRFS are intended to be replicated between instances in real time. You need to look into the specific category of Distribute File Systems. The Wikipedia page Comparison of distributed ...
- 10.3k
5
votes
Migrate SQL 2008 database to Azure
Since you need to migrate SQL 2008 to a new host, I would suggest you follow the blog post instructions. That works for me.
- 3,918
5
votes
Is ceph replication based on nodes or disks?
Yes
You can define the policy to replicate by node, racks, datacenters, etc.
- 2,690
5
votes
Accepted
Can ZFS using snaphots replace DRBD using sync protocol A?
I asked a somewhat similar (yet different) question lately
In short, it all depends on the replication target you want to achieve and if ZoL fits your use case:
if point-in-time replication is ...
- 50.7k
5
votes
Design Replication between 2 Always On Groups in SQL Server 2012
As a possible solution, you can look into creating failover cluster instances with SQL configured as the role (inside a failover cluster). Hopefully, this link will be helpful
- 5,115
5
votes
Replicating storage efficiently
On the block level, the synchronization can be done using Starwind that makes a mirrored disk on both ends. It can run over iSCSI LUNs, making active-active storage. No additional hardware required. ...
- 1,483
4
votes
Redis Multi-Master Replication
I am also looking for a solution to this challenge, so far, I found:
https://github.com/Netflix/dynomite/wiki/Architecture
And maybe...
https://github.com/CodisLabs/codis or https://github.com/...
- 1,539
4
votes
Prevent non-replication writes to MySQL slave?
As of MySQL 5.7.8, there is now a super_read_only option, which prevents even SUPER users from performing client updates. It does not disrupt the replication process. As with other settings, it can be ...
- 1,612
4
votes
mysql stop slave forever
The procedure is different based on the MySQL server version.
For version 5.0 and 5.1, run STOP SLAVE, CHANGE MASTER TO MASTER_HOST='' and then RESET SLAVE.
In these versions the RESET SLAVE command ...
- 1,568
4
votes
Accepted
Why Redis slaves don't take over the master after master fail in Redis Cluster?
You need to have at least 3 masters to form a redis cluster. If majority of masters die at the same time, cluster becomes unusable. Failover does not happen if majority of masters are not available.
4
votes
Accepted
How to do storage replication on Windows Server 2012 R2 in a lab?
Check out SDS solutions from HP http://www8.hp.com/us/en/products/data-storage/free-vsa.html and StarWind https://www.starwindsoftware.com/starwind-virtual-san-free. They both have free versions, but, ...
- 9,126
4
votes
Accepted
How to lower AD inter-site replication interval below 15 minutes?
It's not posible to set lower limit less then 15 min, but if you have good link you can enable notifications on site link. It will speed up change propagation between linked sites.
To do it for link:
...
- 3,313
4
votes
Accepted
Active Directory - Only bridgeheads get the full forest replication
Q: Is the primary domain controller supposed to be the only domain controller in my DefaultFirstSiteName site that receives replications from it's sister site?
A: I think what you're really asking ...
- 111k
4
votes
Accepted
How to Change Replica Set Protocol Version in MongoDB.
You need to restart the mongod service after rs.reconfig(cfg). The reconfig will change the protocol version but it will be active after the restart. First you need to restart the secondary, then do a ...
- 56
4
votes
How do you handle IP addressing at a DR Site
The exact scheme varies, but the key is to use separate addresses for management that always stay in place, and client-facing virtual addresses that you move or reroute on failover.
Alternatively, you ...
- 11.7k
3
votes
Accepted
Need to DUPLICATE HTTP requests to two servers
What we chose eventually was using Gor (now GorReplay) https://github.com/buger/goreplay
this solution allows installing a listener on the original host, and what it does is record any incoming HTTP ...
- 233
3
votes
Create a MySQL slave from another slave, but point it at the master
I did what @RolandoMySQLDBA suggests but also adding a 6' and an 8' steps (this solves what @Hussain Tamboli comments.):
Step 1) Setup a New Server (ServerC)
Step 2) On ServerC, Install MySQL (same ...
- 131
3
votes
Safe to demote & rebuild AD replica running exchange?
No, it isn't safe.
First of all, it's not supported to demote a domain controller running Exchange. Demoting the domain controller would cause support issues when you contact Microsoft.
Second ...
- 18.6k
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