NonStop NS14000 Series Planning Guide (H06.13+)

MeaningStateLED
Power is off, or a fault exists (amber
LED is on).
Off
Power is on with LSU available for
normal operation.
GreenLSU logic board (green LED)
Power is off.Off
Power is in progress, board is being
reset, or a fault exists.
AmberLSU logic board PIC (amber LED)
Normal operation or powered off.Off
Versatile I/O (VIO) Enclosure
NOTE: For NonStop NS14000 series servers that contain I/O Adapter Module (IOAM) enclosures,
refer to the H06.07 (or earlier) version of this manual for planning, configuration, and maintenance
information of the IOAM enclosure.
A VIO enclosure, which is 4U, provides connectivity to the processors, Fibre Channel storage
devices, and gigabit Ethernet networking. Two VIO enclosures, one required for each ServerNet
fabric, are installed in a 19-inch rack.
Each VIO enclosure contains:
• Connectivity for up to eight processors, configured in pairs
• Up to eight Fibre Channel ports for communicating with storage devices such as a “Fibre
Channel Disk Module (FCDM)” (page 24), tape devices, or an Enterprise Storage System
(ESS) disk
• Up to eight copper/optical Ethernet ports used for Ethernet connectivity
• Connectivity to 6780 ServerNet cluster switches
• Two fans to provide the cooling for components inside a VIO enclosure
• Two power supplies with universal AC input to provide power to the components in a VIO
enclosure
For each VIO enclosure to operate, at least one power supply in each VIO enclosure must be
operational. For fault tolerance, you must connect the power supplies in each VIO enclosure to
separate power distribution units (PDUs). For example, the power supplies located in slot 15 and
slot 18 of each VIO enclosure cannot both be plugged into the left PDU.
The two VIO enclosures promote fault-tolerant configuration and servicing:
• Redundant hardware provides fault tolerance if it is divided between the two VIO enclosures.
• Fault-tolerant paths must be configured through the two VIO enclosures.
This illustration shows the slot locations and component details for a single VIO enclosure:
22 NonStop NS14000 Series System Overview