Owner's manual

IOMF2 (I/O Multifunction 2)
Each I/O multifunction 2 (IOMF2) CRU in a NonStop server contains these components:
• A service processor (SP)
• Two internal SCSI controllers
• One external SSAC
• A ServerNet plug-in card (PIC), which provides connectivity to internal ServerNet fabrics
Location in OSM Tree: System > Group > Module > IOMF2
Slot Location: IOMF2 CRUs are located in slots 50 and 55 of Nonstop S-series I/O enclosures (service side).
Example: IOMF2 (1.1.55)
Attributes
IOMF2
Displayed in the Attributes tab and Attributes dialog box only if the value is something
other than OK. Values
Service State
Physical
A code that identifies the generation of the component. Hardware revision codes are
used for tracking components.
Hardware Revision
Identifies the manufacturer of the component.Manufacturer
The part number of the component that was assigned in manufacturing. Use part
numbers for identifying and ordering parts.
Part Number
Whether the component is powered on. ValuesPower State
A unique serial number that identifies the component.Track IDs are used for tracking
components.
Track ID
Logical
The operational voltage of the IOMF2 CRU (specifically, the raw voltage supplied to
the DC-to-DC converters).
DCC Voltage
Which, if any, ServerNet router ports on this IOMF2 CRU are disabled. OSM actions
to disable or enable a ServerNet port are performed as directed by OSM alarm repair
actions.
Disabled ServerNet Ports
The current voltage of the Fan CRU.Fan Voltage
The voltage of the Main Rail, which supplies power to the IOMF2 CRU from its own
power supply
Main Rail Voltage
The current voltage on the Main Rail of the IOMF2 CRU, measured after the fuse.Main Rail Voltage After Fuse
The voltage measured between the MOSFET switch and the diode to the DCC.The
MOSFET switch is located on the Other Rail between the alternate power supply
and the DCC.
MOSFET Voltage
The voltage of the Other Rail, which connects the IOMF2 CRU to the other power
supply in the enclosure (to provide power in the event of a problem with the Main
Rail power supply).
Other Rail Voltage
The current voltage on the Other Rail of the IOMF2 CRU, measured after the fuse.Other Rail Voltage After Fuse
The maximum voltage limit (60 volts) for the IOMF2 CRU.Rail Maximum Voltage
The minimum voltage (39.6 volts) that must be available to power the IOMF2 CRU.Rail Minimum Voltage
The voltage of the SCSI-X path, the primary path used for disks on a system.SCSI-X Voltage
The voltage of the SCSI-Y path, the path configured for mirrored disks on a system.SCSI-Y Voltage
150 System Resources