Fibre Channel ServerNet Adapter Installation and Support Guide (G06.28+, H06.06+, J06.03+)

Fibre Channel Disk Module (FCDM) Connection
Any connection between a NonStop S-series system or an Integrity NonStop NS-series system
and an FCDM 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 $FCSMON), a persistent generic process that runs in all processors.
Before connecting an FCDM to an FCSA, make sure that an FCS Monitor process is running in
all processors. Each of the two SACs on an FCSA can support as many as four FCDMs, for a total
of eight per FCSA. The FCS Manager process assigns a SAC on an FCSA to a particular instance
of the FCS Monitor.
The FCS Monitor process performs these tasks:
• Accepts requests from FCS Manager process and provides the FCS Manager with FCDM
information
• Notifies Configuration Services (ZCNF) of hardware changes in FCDMs and in the process
updates the PCT
• Generates Hardware Change events and Environment status change events to Service logs
($ZLOG)
• Polls the EMU of every FCDM being monitored
• Issues control commands, such as, disk location LED indicator ON/OFF to an EMU
• Issues FIR information request commands like hardware type and revision to an EMU
• Issues FCDM status commands to EMU
The FCS Monitor is a persistent generic process. The SCF Reference Manual for the Kernel Subsystem
shows how to display information about the FCS Monitor process.
Tape Drive Connection
Connections between host tape processes on NonStop NS-series systems and SCSI attached
N1525A tape drives require the use of a M8201 Fibre Channel to SCSI router, which you install
inside the system cabinet. For information about installing the Fibre Channel to SCSI router and
connecting it to the FCSA, see the M8201 Fibre Channel to SCSI Router Installation Guide.
For information about using SCF to configure the appropriate TAPE object on the NonStop
NS-series system, see “Tape Configuration” (page 46) and the NonStop S-Series Planning and
Configuration Guide“Tape Configuration”.
Prepare to Install an FCSA
Preparation Checklist
1. “Plan the Installation” (page 51)
2. “Start Completing the Configuration Forms ” (page 31)
3. “Gather the Proper Tools” (page 34)
4. “Review Standard Operating Practices” (page 34)
5. “Check That the Slot Was Not Previously Configured” (page 35)
6. “Power Interface” (page 35)
Plan the Installation
Planning the installation of the FCSA is part of an overall strategy for fault tolerance in the storage
subsystem. The planning for the NonStop server might differ from the planning for other HP
components of the system as the NonStop server strategy most likely emphasizes fault tolerance
and the strategy for other HP components might emphasize performance.
Planning for fault tolerance in the NonStop server storage subsystem is a broad topic. In general,
minimizing any occurrences of shared hardware increases fault tolerance. Maximal fault tolerance
30 Installing an FCSA