NonStop NS-Series Operations Guide (H06.04+)

I/O Adapters and Modules: Monitoring and Recovery
HP Integrity NonStop NS-Series Operations Guide—529869-002
8-2
Fibre Channel ServerNet Adapter (FCSA
Fibre Channel ServerNet Adapter (FCSA
The FCSA provides Fibre Channel connectivity to certain external devices such as disk
drives contained in a disk drive enclosure that supports fibre channel disks and an
Enterprise Storage System (ESS).
Any connection between an Integrity NonStop system and a disk drive enclosure
containing M8xxx fibre channel disks requires the services of two processes: the Fibre
Channel Storage (FCS) Manager, which is part of the Storage Manager ($ZZSTO),
and the FCS Monitor $FCSMON), a persistent generic process that runs in all
processors. An FCS Monitor process must be running in all processors. Each of the
two SACs on an FCSA can support as many as four disk drive enclosures, for a total of
eight per FCSA. The FCS Manager process assigns a SAC on an FCSA to a particular
instance of the FCS Monitor.
Up to 10 FCSAs can be housed in an I/O adapter module (IOAM), which is mounted in
an IOAM enclosure. The form factor and connection technology of IOAM enclosures
differ from the standard I/O enclosures that provide direct ServerNet access to external
I/O devices. A pair of ServerNet switch boards, also located in the IOAM enclosure,
provide connectivity between the processors and the FCSAs. All IOAM hardware can
be monitored by OSM.
For information about the disk drives or tape drives supported through FCSAs for your
H-series RVU, refer to the H06.nn Release Version Update.
Gigabit Ethernet 4-Port Adapter (G4SA)
The M8800 Gigabit Ethernet 4-port ServerNet adapter (G4SA) provides Gigabit
connectivity between Integrity NonStop systems and Ethernet LANs. G4SAs are
installed in slots 1 through 5 of an I/O adapter module (IOAM). There are two IOAMs in
an IOAM enclosure, so a total of 10 G4SAs can be installed in an enclosure. Although
the G4SA supersedes the Ethernet 4 ServerNet adapter (E4SA), Fast Ethernet
ServerNet adapter (FESA), and the Gigabit Ethernet ServerNet adapter (GESA), it
cannot be installed in a NonStop S-series enclosure.
A G4SA has three primary system connections:
•
Data transfer interface (ServerNet)
•
Maintenance entity (ME) interface
•
Power interface
The data transfer interface consists of ports to the ServerNet X and Y fabrics. The
ports connect to the ServerNet addressable controller (SAC) on the adapter. If one
ServerNet fabric fails, the G4SA can still be accessed using the remaining fabric.
The Maintenance Entity (ME) interface contains the circuitry required to meet the
maintenance system requirements of an active-logic adapter.
The G4SA receives power through a shielded, high-density, metric connector module.
The connector module provides attachments to the two ServerNet fabrics.