Change string value to integer in a SNMP monitor

When you create an SNMP monitor in SCOM 2007 R2, SCOM assumes that the values are in STRING-format. So if you define, that your monitor should check an SNMP-OID to be greather than 70 and the SNMP OID gives a value of 100 back, your monitor will generate an error. To correct this, you have to tell your monitor, that it’s an INTEGER-value. Unfortunately, you can’t do this with SCOM Console.

The easiest way to do this, you have to export your management pack and open it with the SCOM Authoring Console. read more

Monitor a SNMP device with Microsoft SCOM 2007 R2

To monitor SNMP devices with SCOM 2007 R2 is a litle special, as i know other products witch are more easy for monitoring SNMP devices. But SCOM has some good feature and if you have SCOM, you don’t want to have another tool only for monitoring SNMP devices.

Here is an overview for monitoring one ore more SNMP devices:

  • Create a separated Management Pack for each device type.
  • Create the SNMP device.
  • Create a group for each device type.
  • Find out, which Values a SNMP devices can have and which OID’s you have to use.
  • Create one ore more SNMP Monitors.
  • Enable the monitor to the device group.
  • Make some adjustments to the monitor.

Here is a step-by-step guide to monitor one ore more SNMP devices:

Create a separated Management Pack for each device type

Make a separated Management Pack for each device type. You will have only benefits:

  • you are able to make some special changes with an xml-editor or the Authoring Console.
  • you can test the Management Pack, go forward and backward.
  • you can export and distribute the Management Pack.

Create the SNMP device

Right click Network Devices under Device Management from Administration pane and select Discovery Wizard. read more

Find AD-User from Email-Address


Did you ever searched an special email-address in your active directory? If yes, you will know, that there isn’t a special field for the email-addresses.


Go to active directory users and computers (ADUC).

Right click on the domain and choose Find.

Select Custom Search in the Find-Field and Entire Directory in the In-Field.

Select the Advanced-Register and type this LDAP query:

ESXi 4.x: change the blocksize for a partition

The ESXi 4.x installer utilizes the default blocksize of 1MB when creating VMFS volumes, allowing for storage of files 256GB and under. This default VMFS Datastore cannot be easily reformatted with a higher blocksize as it contains the Service Console VMDK file. But to store files greather than 256 GB (ex. VMDK), you have to use a blocksize greather than 1 MB on your partition. If you use your system-partition for saving VMDK-Files greather than 256 GB, you have to change the blocksize of your system-partition. Unfortunately VMware doesn’t give you the possibilty to do this during the installation. So you have to do this with a trick after the installation: Install the VMware ESXi 4.x host as always. After the installation follow this steps: ESXi 4.1 Default-Screen Press the Funktion-Key F2 ESXi 4.1 Logon-Screen Logon with your root-account. Troubleshooting Options Select Troubleshooting Options. Select Enable Local Tech Support. After you enabled the local Tech Support, press two times the Key ESC, to exit to the Default Screen. ESXi 4.1 Default-Screen Press the Key-Combination ALT+F1 to enter the local Tech Support. You have to logon again on the console screen. After you loged in, run the follow command: You will receive the informations about all installed Drives: Now run this command:

For <BLOCKSIZE> use the value from the next table. For <DRIVE-ID> use the value received from the last command (marked yellow in example):
block size maximum file-size on vmfs3
1 MB 256 GB
2 MB 512 GB
4 MB 1 TB
8 MB 2 TB
The process did run for around 20 seconds on my 1 TB disk. After succesfull running, press the Key-combination ALT+F2, to exit to the default window. Please disable now the Local Tech Support and make a reboot.

BitLocker in a enterprise environment

Each System-Administrator knows the problem. Every day a users loses his Notebook or his mobile device. The financial loss is one thing, but lose the the datas and the control who has access to this datas is a disaster for a lot of companies.

To secure your datas from loss some developers created solutions to backup your datas. Another important point is to encrypt your datas in a secure way, so that no one outside your organisation can access your sensitive datas.

The following things should be noted: read more