When a LUN is presented to a physical Windows server it’s more easy to link the LUN to the mounted disk within the operation system.
You can simply open the Disk Management tool (diskmgmt.msc) and click on the properties of the disk itself (not the partition!).
On the general tab, you can find the LUN number in the Location section.
In our case some LUNs are directly presented to a virtual machine running Windows 2008R2 (Raw Device Mappings). The disks itself are used within a virtual cluster configuration.
The customer asked me to identify the disk within the virtual machine together with the disk on the storage array (HP EVA 8400).
If you think this should be an easy task, think twice! The procedure below will be able to assist you in this matter. Continue reading →
I recently was at a customer for a Symantec Backup Exec installation. The customer Active Directory domain was configured as 2 child domains and one parent domain. The parent domain is used in their main site(s), the child domains are used for the remote branches (EMEA / US). On each location a VMware environment is installed with a dedicated Virtual Center server. As authentications are required for users within each domain, several LDAP strings are defined in SSO (https://vcenter:9443).
These LDAP queries are pointed to a set of servers (the Domain Controllers). When a domain controller is demoted or deleted, the LDAP queries are non-functional… And that’s what happened here! So the LDAP configuration needed to be altered. Quickly I discovered this is only possible by using a local SSO account! The default SSO account (admin@System-Domain) has some kind of master password that needs to be entered when reconfiguring the software component. It’s extremely important this password is written down and stored in a safe location as alternation of the password is impossible (cfr. VMware support).
For a project, we needed to implement a VEEAM Backup & Replication setup. During the project we encountered some virtual machines with Physical RDMs. VEEAM cannot handle this, so it was needed to write a script allowing us to list all virtual machines with their most interesting parameters, such as:
Virtual Machine Name
The function Get-VMFolderPath can be found on this blog.