NonStop NS1000 Planning Guide (H06.08+)

you could configure these paths through the Fibre Channel ports located on the two VIO
enclosures:
Slot.PortModuleGroupPath
1.102100Primary
1.103100Primary backup
1.203100Mirror
1.202100Mirror backup
These paths all exist within the same group. But they are divided between two VIO enclosures,
so the configuration is fault-tolerant. For additional information, see “Fibre Channel Devices”
(page 82).
Fibre Channel Disk Module
The FCDM is a rackmounted enclosure that contains:
• Up to 14 Fibre Channel arbitrated loop disk drives (enclosure front)
• Environmental monitoring unit (EMU) (enclosure rear)
• Fibre Channel arbitrated loop (FC-AL) modules (enclosure rear)
An FCDM connects to the Fibre Channel ports on a VIO enclosure. Using the four embedded
Fibre Channel ports on each VIO enclosure, you can daisy-chain together up to four FCDMs
with 14 disk drives in each FCDM for a maximum of 16 FCDMs. This illustration shows a fully
populated Fibre Channel disk module:
Tape Drive and Interface Hardware (Optional)
For an overview of tape drives and the interface hardware, see “Fibre Channel Ports to Tape
Devices” (page 82).
For a list of supported tape devices, refer to the NonStop NS1000 Hardware Installation Manual.
Maintenance Switch (Ethernet)
The HP ProCurve maintenance switch provides the communication between the Integrity NonStop
NS1000 system through the VIO enclosures, the optional UPS, and the system console running
62 Modular System Hardware