Software Owner manual

Using VCEM subranges in a federated CMS environment
In a federated CMS environment, it is critical to select unique pre-defined VCEM subranges during
HP Insight Management DVD installation for each CMS in the federation. This prevents the different
VCEM instances from using MAC or WWNs which belong to other instances. This also results in
an automatic creation of VCEM exclusion ranges for MAC or WWNs which do not belong to a
particular VCEM instance.
Managing exclusion ranges with multiple central management systems
The Insight Management installer provides 128 subranges for VCEM-Defined MAC address and
WWN ranges (size 1024) for user selection. The 128 subranges allows you to manage 128 CMSs
and the VCEM-defined range size (1024) in use by each CMS is enough to manage up to 16
enclosures in each CMS.
For a complete list of VCEM-defined MAC and WWN subranges, see “VCEM subranges” (page 185).
Extending VCEM in use ranges
If you selected the Multiple CMS checkbox on the VCEM Range selection screen at install time,
VCEM automatically creates 127 exclusion ranges after installation. If you need to manually
manage the WWN and MAC exclusion ranges to extend the current VCEM-defined range in use
by the VCEM instance:
1. From the CMS, go to the VCEM home page by selecting Tools→Integrated Consoles→Virtual
Connect Enterprise Manager (VCEM).
2. In the Administration section, click the MAC addresses link.
The VCEM-defined MAC address exclusion ranges will be displayed in groups of 10. Each
range defaults to a size of 1024 addresses. If a larger range is required, exclusion ranges
may be deleted to increase the size of the remaining in use VCEM-defined range. To delete
an exclusion range, select the checkbox next to the name for those ranges, and click Delete.
Be sure the range deleted from exclusion range is not in use in any other VCEM instances (this
means, it must be part of the exclusion range in the other VCEM instances).
3. In the Administration section, click the World Wide Names link.
The VCEM-defined WWN exclusion ranges will be displayed in groups of 10. Each range
defaults to a size of 1024 addresses. If a larger range is required, exclusion ranges may be
deleted to increase the size of the remaining in use VCEM-defined range. To delete an exclusion
range, select the checkbox next to the name for those ranges, and click Delete. Be sure the
range deleted from the exclusion range is not in use in any other VCEM instances (this means,
it must be part of the exclusion range in the other VCEM instances).
If you had manually configured the exclusion ranges for VCEM-defined MAC and WWN
ranges you need to edit the exclusion ranges to reduce their size appropriately. Be sure the
addresses removed from the exclusion range are not in use in any other VCEM instances (this
means, they must be part of the exclusion range defined in the other VCEM instances).
Transferring all managed VC Domains from one VCEM instance to another
Use the procedure in the following example to transfer all managed VC Domains from one VCEM
instance to another VCEM instance. This example assumes that the source CMS is the VCEM
instance using subrange 1 which will be deactivated and all its managed VC Domains will be
transferred to the other VCEM instance (called target CMS) using subrange 2.
1. Remove all VC Domains (for example Domain_A, Domain_B, Domain_C) from the VCEM VC
Domain Group which resides in the source CMS.
2. Power off the source CMS. This guarantees that no more than one VCEM instance is using
that same subrange.
140 Managing MAC and WWN addresses