User's Manual

Introduction 12
• If double-dense mode is enabled in the Domain Setup Wizard, each enclosure can support a total of
128 servers.
• Stacking cables are used to connect multiple enclosures. This allows all VC-Enet modules to be
interconnected and redundantly stacked.
• When the domain stacking mode is configured, stacking cables connect the primary slice of each
enclosure. The primary slice is the primary and standby interconnect modules for the enclosure.
• All enclosures must have the same FC, FlexFabric, or Flex-10/10D 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.
• 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.
• VC-FC or FlexFabric modules must be in the same bay of all enclosures and connected to the same FC
switch to enable profile mobility.
• All FC-capable modules in the same horizontally adjacent bay pair (bays 1-2, 3-4, and so on) must be
of the same type and position in all enclosures.
• Multi-enclosure double-dense domains require similar and compatible VC-FC modules in bays 5, 6, 7,
and 8 in all enclosures when FC connectivity is required. If a multi-enclosure double-dense configuration
contains incompatible VC-FC modules in bays 5, 6, 7, or 8 in any of the enclosures, some or all of the
compatible VC-FC modules in the remote enclosures might be designated INCOMPATIBLE after import.
• Be sure all Onboard Administrator and VC module management interfaces within the same VC domain
are on the same lightly loaded subnet and highly reliable network.
If the management network is overloaded, configuration attempts may be disabled until the connectivity
is re-established and synchronized with the domain.
• HP recommends using a static IP address for Onboard Administrator.
• Be sure all Onboard Administrators use the same user credentials. VCSU uses the primary credentials
for the remote enclosures to propagate firmware updates to all VC modules in each 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.
CLI command execution modes
The Virtual Connect Manager CLI provides two different methods for executing commands: interactive shell
mode and script mode. Script mode is the same as non-interactive mode.
Interactive Shell Mode
This mode is used to invoke CLI command operations with the dedicated management shell. The shell is
provided after you log in with valid credentials, and only accepts known VCM CLI commands as input.