We are thinking of upgrading a DataMiner System from the 9.5 main release towards DataMiner X. This system was migrated from a Magellan NMS OEM solution and it's running pretty stable.
In recent weeks a new monitoring system project was started in another location, and we are thinking of keeping the two as separate clusters, but with replicated elements. As you may know, for this to happen, both DataMiner Systems need to use the same version of the software.
We therefore need to be very sure that DataMiner X is our best choice, and we also need to know any risks that this operation can bring not only to the stability of the system but also to the workload of the people taking care of this upgrade.
We would therefore like to know the following things:
- What's the average duration of an upgrade from DataMiner 9.5 to DataMiner X (100 GB DB size)?
- Is the additional disk for indexing mandatory or merely advised? (I understand only IDP or SRM solutions would require the additional disk, but perhaps it's already advised to upgrade the server hardware.)
- What is the required planned maintenance engineering window (number of hours 4/8/12)?
- How many setups are already running DataMiner X at the moment?
Generally speaking DataMiner X can be considered stable, and your customer will be able to use all the new features DataMiner X has to offer, but as you know there is no one-fits-all advise for this.
Next to SRM and IDP, the indexing service is also used for some other advanced features such as anomaly detection. So it is not strictly needed, but your customer will miss out on a number of exciting DataMiner X features without the additional hardware.
If the system remains running on the existing database, the upgrade time does not so much depend on the database size, but rather on the number of active elements in the system. This could range from 15 minutes to several hours, the best reference is how long previous upgrades of the same system took.
If the system is still using a MySQL database and you are considering a migration to Cassandra, the migration wizard will give you an estimation of the required time, you can run the wizard and not continue in order to plan the needed maintenance window. In this case it is advised to upgrade the system first, and do the migration as a separate step at a later time.