Setup and Install

Installation 31
Multi-enclosure double dense domains require similar and compatible FC modules in bays 5, 6, 7, and 8 in
all enclosures. If a multi-enclosure double dense configuration contains incompatible FC modules in bays 5,
6, 7, or 8 in either the local or remote enclosures, some or all of the compatible FC modules in the remote
enclosures might be designated INCOMPATIBLE after import.
To add additional enclosures to a domain, see the HP Virtual Connect for c-Class BladeSystem User Guide
on the HP website (http://www.hp.com/go/vc/manuals).
Multiple enclosure requirements
Observe the following requirements when connecting multiple enclosures:
• A single domain supports up to four c7000 enclosures.
• Each enclosure must have at least one supported VC-Enet module installed.
• If the domain stacking mode is configured to full stacking, all VC-Enet modules must be interconnected
and redundantly stacked.
• If the domain stacking mode is configured to horizontal or primary slice stacking, the primary slice of
each enclosure must be connected with stacking cables.
• All enclosures must have the same FC and FlexFabric module configuration.
For example, if bays 1 and 2 of the Primary Enclosure contain FlexFabric-20/40 F8 modules, then bays
1 and 2 of Remote Enclosures 1, 2, and 3 must also contain FlexFabric-20/40 F8 modules.
• All enclosures must have the same HP VC Flex-10/10D module configuration.
For example, if bays 1 and 2 of the Primary Enclosure contain HP VC Flex-10/10D modules, then bays
1 and 2 of Remote Enclosures 1, 2, and 3 must also contain HP VC Flex-10/10D modules.
• A total of 16 Ethernet and 16 VC-FC type modules can be installed in a multi-enclosure domain.
• Each FlexFabric module counts as one Ethernet and one VC-FC module. Combinations of FlexFabric,
VC-Enet and VC-FC modules are allowed as long as the 16-module limit for each module type (Ethernet
and FC) is not exceeded in the domain.
Additional constraints apply for the FlexFabric-20/40 F8 module ("HP Virtual Connect
FlexFabric-20/40 F8 Module requirements" on page 22).
• All Onboard Administrators and VC modules must be on the same lightly loaded and highly reliable
management Ethernet network and IP subnet.
• The VC-FC and FlexFabric FC-configured uplink port configuration must be identical across all
enclosures.
• The Onboard Administrator firmware must be version 3.11 or higher. HP recommends using the latest
version available.
• All Onboard Administrators must use the same user credentials. VCSU uses the primary credentials for
the remote enclosure.
• When both Primary and Standby modules in the base enclosure are taken down for maintenance or
lose power and are no longer present in the domain, the management capabilities in the VC domain
are lost. Both the Primary and Standby modules in the base enclosure must be recovered to regain
management access to the VC domain.
If network and fabric uplinks are defined on the remaining enclosures, the servers continue to have
network and storage access.