NonStop Operations Guide for H-Series and J-Series RVUs

You can choose these system load disks:
• An FCDM-Load attempts to load the system from a system disk in the FCDM enclosure connected
to IOAM enclosure group 110:
FCDM
Enclosure
FCSAIOAM
BayShelfSACSlotModuleGroupPath
11112110Primary
11113110Backup
11213110Mirror
11212110Mirror Backup
NOTE: For NonStop NS14000 series, NS1200, and NS1000 systems, Fibre Channel disks
are connected to IOAMs or VIO enclosures located in group 100. For more information, see
the Planning Guide for your NonStop NS14000 series, NS1200, or NS1000 system or the
Versatile I/O (VIO) Manual.
• A load from $SYSTEM attempts to load the system from a disk with default group, module,
slot that varies with the system type. See the Planning Guide for your NonStop system to find
the default startup characteristics for your system.
• A CLIM attached-load attempts to load the system from a disk in a SAS disk drive enclosure.
CLIM-attached disks saved as System Load Configuration are displayed in the drop-down
menu. CLIM attached-load is the only type of system load available for NonStop N2400
series, NS2300, NS2200 series, NS2100, and NS2000 series systems.
• You can configure additional alternate system disks to load from. To create an alternate system
disk, see the Installation Guide for your NonStop system. Then, after using the Save as System
Load Configuration action on the Disk object in the OSM Service Connection, this new
configuration will be listed among the options under the Configuration Drop-down menu in
the System Load dialog box of the OSM Low-Level Link.
System Load Paths for a Normal System Load
16 paths are available for loading. Table 33 (page 184) describes each load path in order of use.
The system load task attempts to use each path until the system load is successful or all possible
paths have been tried. If the system load fails along all paths, refer to “Troubleshooting and Recovery
Operations ” (page 193).
Table 33 System Load Paths in Order of Use
Data Travels
Over ServerNet FabricTo ProcessorFromDescriptionLoad Path
X0$SYSTEM-PPrimary1
Y0$SYSTEM-PPrimary2
X0$SYSTEM-PBackup3
Y0$SYSTEM-PBackup4
X0$SYSTEM-MMirror5
Y0$SYSTEM-MMirror6
X0$SYSTEM-MMirror backup7
184 Starting and Stopping the System