关于：MDaemon Server Cluster（群集）

goxia

以下是ALTN官方和一个MD管理者的回答：<br>
1）MDaemon does not currently support Windows clustering, sorry.<br>
<br>
2）I actually have this working now with the cluster based on File Share,<br>
and Generic Windows Service. You need to separate your mail data from<br>
your application files (have c partition for OS, D for Mdaemon App, and<br>
M cluster drive for data such as user mail, public folders, etc...).<br>
Use replication with robocopy for your dat files, but maintain separate<br>
ini files for Mdaemon. You will need to use Mapped drives on each<br>
cluster member for the data since Mdaemon does not seem to want to play<br>
nice with UNC paths for data locations. Took a bit of trial and error<br>
to set up but it is all working now. Mdaemon is not cluster aware but<br>
the OS and File System are so it all works out. You can set a number of<br>
dependencies but the share and the generic service are sufficient. If<br>
the share fails, or the mdaemon service crashes there is a grace period<br>
to allow a restart to happen and then a fail-over to the other standby<br>
node. The IP and cluster name get transferred to the other node<br>
immediately and everything starts working again. Also make sure you set<br>
up the Network Service in Mdaemon as a Domain Account that has proper<br>
permissions on each node in your cluster. I just have 2 that share an<br>
attached RAID array which is also configured in cluster mode.<br>
Optionally, you can sit this behind a load-balancer for better HA.<br>
<br>
Jeff

cfang

留个名，下次好找

asionliang

没有啊从没有接触过类似的项目~~ 晕

hzmark

呵呵，谢谢楼上，你有双机互备的案例吗？<br>
我一直在找这方面的案例。

asionliang

非常感谢hzmark,春节过后第一次上来就有精品。^^

goxia

感觉这样做费用太高了。

hzmark

电源烧了，不太明白楼上的意思？<br>
<br>
服务器电源烧了，双机软件会做切换呀，切换到另外一台服务器上，MD照常运行呀，有什么关系？<br>
<br>
希望与楼上电话交流057128920876<br>
<br>

goxia

手工切换实现双机是很容易实现的。<br>
关键是全自动的群集，也就是说，当nodea出现故障，nodeb继续工作，并且MD也自动工作。<br>
使用普通的方法，能够保障用户目录实现群集，但是账号设置却很难。因为账号和其他设置使用的文件方式保存，我们需要将MD安装在*享盘中，而nodea和nodeb同时开启的时候，只有一个节点有控制权，那么必然导致另外一个节点的MD运行失败。所以还有需要考虑解决的问题。

hzmark

我个人觉得，MD应该是支持做集群的，要不然，他们真的没法再卖了：）

U-Mail

md是说软件本身不支持集群，不代表没有集群解决方案．我以前是试过的，完全没问题．<br>
<br>
以前给一家公司做方案，公司粉有钱，而且要求也很高，于是就用两台服务器和ＲＡＳ，然后用ＲＯＳＥ　ＨＡ做的集群，效果很好．