NonStop NS14000 Planning Guide (H06.10+)

• The Integrity NonStop NS1000 system supports only configurations with two VIO enclosures.
In systems with two VIO enclosures:
— With four Fibre Channel ports and two FCDMs, the primary Fibre Channel port resides
in VIO enclosure module 2, and the backup Fibre Channel port resides in VIO enclosure
module 3. (See the example configuration in ???.)
— With eight Fibre Channel ports and four FCDMs, the primary Fibre Channel ports reside
in VIO enclosure module 2, and the backup Fibre Channel ports resides in VIO enclosure
module 3. (See the example configuration in ???.)
• Daisy-chain configurations follow the same configuration restrictions and rules that apply
to configurations that are not daisy-chained. (See ???.)
• FCDMs containing mirrored volumes must be installed in separate daisy chains.
• Daisy-chained configurations require that all FCDMs reside in the same cabinet and be
physically grouped together.
• Daisy-chain configurations require an ID expander harness with terminators for proper
FCDM and disk drive identification.
Example Configurations of the VIO Enclosures and Fibre Channel Disk Modules
These subsections show various example configurations between Fibre Channel ports on the
VIO enclosures and Fibre Channel disk modules.
NOTE: Although it is not a requirement for fault tolerance to house the primary and mirror
disk drives in separate FCDMs, the example configurations show FCDMs housing only primary
or mirror drives, mainly for simplicity in keeping track of the physical locations of the drives.
• “Four Fibre Channel Ports, Two FCDMs, Two VIO Enclosures” (page 88)
• “Eight Fibre Channel Ports, Four FCDMs, Two VIO Enclosures” (page 89)
• “Twelve Fibre Channel Ports, Six FCDMs, Two VIO Enclosures” (page 91)
• “Sixteen Fibre Channel Ports, Eight FCDMs, Two VIO Enclosures” (page 92)
• “Daisy-Chain Configurations” (page 94)
Four Fibre Channel Ports, Two FCDMs, Two VIO Enclosures
This illustration shows example cable connections between four Fibre Channel ports (two on
each VIO enclosure) and the primary and mirror Fibre Channel disk modules:
88 System Configuration Guidelines