Tag Archives: migration

HP Comware: Forwarding subnet-directed broadcasts for Wake-on-LAN

Last week, my colleague Claudia and I have ported a HP ProVision configuration to HP Comware. Unexpectedly, it wasn’t routing or VLANs or OSPF that caused headaches, it was a Wake-on-LAN (WoL). Depending on the used tool, the magic packet (which wakes up the computer) is a broadcast (255.255.255.255) or a subnet-directed broadcast (e.g. 192.168.200.255). So it was important to know what tool the customer used.

This is how HP ProVision implements subnet-directed broadcasts:

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How to migrate from VMware vCOps to vROps – Part 3

I wrote about what’s new in vROps 6 and about the deployment of the virtual appliance. I also described how to migrate the data from the old vCOps vApp. Part 3 covers the decommission of the old vApp.

Enter the IP or FQDN of your UI VM into the browser. Login as admin into the administration UI.

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Before the vApp can be removed, the vCOps needs to be unregistered from the vCenter. Click “Unregister”.

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A confirmation pop-up appears. Click “Yes”.

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The process can take some time, depending on your environment. In my case the unregistration took about 5 minutes.

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How to migrate from VMware vCOps to vROps – Part 2

Part 1 of this series has covered a short overview over vRealize Operations Manager 6.0 and the initial deployment of the virtual appliance. Now it’s time to bring it to life.

Open a browser and enter the IP of your newly deployed vROps appliance. You will get this nice initial setup screen. “New Installation” is always a good start. Click “New Installation”.

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Within five little steps, the configuration of vROps will be done. You may have noticed the “Migrate Data” icon on the right of the screenshot. This will be important later. Start with clicking “Next”.

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How to migrate from VMware vCOps to vROps – Part 1

VMware presented the vRealize Operations Manager 6.0 at the VMworld 2014 in Barcelona. In early december, vROps was available for download.

vROps 6.0 is the successor of VMwares IT Operations Management suite vCenter Operations Manager, or vCOps. VMware has aligned the naming scheme with other products, so this release is the first release under the new brand vRealize.

VMware has made some major improvements to this release. One of the biggest advantages is the ability to scale-out. In prior releases you had to deploy multiple vApps to scale. Now you can add additional vROps instances to a cluster. These appliances provide computing resources, as well as redundancy. This allows you to scale beyond the limits of vCOps 5. Redundancy is provided by a concept which is based on master, replica and data nodes. The fist node in a vROps deployment is the master node. By adding a replica node, you can add redundancy for the case that the master node fails. Master and replica node work in a active/ standby relationship. The data nodes are the secret behind the scalability of vROps. A data node has only one task to perform: Collect data based on the assigned adapter.

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Active Directory property ‎’homeMDB‎’ is not writeable on recipient

During an Exchange 2013 migration project the  first attempt to migrate a mailbox failed with the following error:

The error message clearly stated, that this was a permission issue. A quick search pointed me to the right direction. I found a thread in the TechNet forums, in which the same error message were discussed. This error occurs, if the Exchange Trusted Subsystem group is missing in the ACL of the user object. This group contains the exchange server and it’s usually inherited from the domain object to all child containers and objects. I checked the ACL of the user and the Exchange Trusted Subsystem group was missing in the ACL. This was caused by the disabled permissions inheritance. An object ACL with disabled permissions inheritance is sometimes called a protected ACL. Bill Long wrote a nice Power Shell script to search for object which have permissions inheritance disabled.

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Exchange 2013: Event ID 2937 MSExchange ADAccess after public folder migration

I got a couple of warnings (source MSExchange ADAccess, Event ID 2937) after removing a Exchange 2007 server at the end of a Exchange 2007 > 2013 migration. The details of the warning told me, that there was a faulty value set to a attribute of the mailbox database object. Because the public folder migration was part of the migration, the error message seemed plausible.

A quick check with ADSI Edit confirmed the message. To be honest: I made a mistake and searched for the attribute PublicFolderDatabase in the database object, but in the end I found the wrong entry as a value of the msExchHomePublicMDB attribute in the database object. It must be set to the distinguished name of the mailbox database that houses the public folder mailboxes. If you don’t have any public folders in your Exchange 2013 org, then you have to clear the value!

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