ITOM Discovery IRE - prevent existing CI being updated when underlying hardware is reused

[stevemac]

New to ITOM Discovery and IRE.  Discovery sources will include SG-SCCM, vCentre and probe discovery of server fleet

We have been having issues with IRE and server record matching records due to issue on how IRE deals with enclosure serial numbers.  Changes in IRE to handle this are creating a new identification rule on the name and serial number as well as changing the serial number and serial number type rule to not look up chassis serial numbers.

Now trying to workout how to deal with server rebuilds, including the reuse of server hardware and reuse of server name.  The scenarios are

New server on previously used hardware
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• Server with Name = "ServerA" and Serial number "1234" existed and is no longer required.   The server is wiped, but the hardware is not end of life so is retained
• Discovery will stop finding "ServerA", but the record in SCCM will exist for some time so expect the CMDB record may not be in a retired status
• Decision made to install new Operating system on same server hardware.  Name will be "ServerB", Serial number remains
• What needs to be done to ensure the config item for "ServerA" remains and a new config item for "ServerB" is created?

Existing server name reused on new hardware (or is virtualised)
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• Server with Name = "ServerC" exists and has serial number "2345".  Expect it to be physical server
• Decision is made to rebuild the server on new hardware or to virtualise it.  The Server name will be retained, the IP address may be retained, but the serial number will change (as would model)
• Is it better to retire the existing CMDB record and let a new one create (with different model and serial number data) or to update the existing CMDB record (new serial number and model info)?
• How to handle the process in IRE?

thanks,

Steve

#discovery

#itom

[Hellfried1]

Hi!

Add Serial and Name to the identification rule of the server class.

Does this work for you?