Cluster I/O Protocols (CIP) Configuration and Management Manual (H06.16+, J06.05+)

7 Storage CIP Migration, Compatibility and Operational
Differences
The user applications, NonStop SQL/MP, NonStop SQL/MX and Disk Process 2 (DP2) can access
the Storage CIP devices without any changes.
There are operational differences between configuring the storage subsystem on IOAM based
systems and on CLIM based systems. This chapter describes those differences. The two biggest
differences are the introduction of a new I/O subsystem (CIP) for CLIM configuration and of a new
SCF object type, the Storage CLIM. The Storage CLIM is managed by commands from both the
Storage subsystem and the CIP subsystem. The SCF product module for the storage subsystem uses
the management object $ZZSTO and the SCF product module for the CIP subsystem uses the
management object $ZZCIP.
NOTE: To find out if your system supports Storage CLIMs, see the planning guide for your system
or the NonStop Networking Overview.
You can perform these tasks by using the SCF product module in the storage subsystem:
• INFO CLIM $ZZSTO.clim-name
• STATUS CLIM $ZZSTO.clim-name
• SWITCH CLIM $ZZSTO clim-name
Alternatively, each of the above commands can be issued from the CIP subsystem by substituting
$ZZCIP for $ZZSTO for the management process specification. The INFO and STATUS commands
display different information if issued to the CIP subsystem. The SWITCH command, when issued
to the CIP subsystem, moves the IP resources back to the home interfaces. When issued to the
storage subsystem, the SWITCH command initiates disk-path switches for the disks configured
through the CLIM and sometimes takes paths up or down. For more information about the behavior
of these commands when issued to the storage subsystem, see the SCF Reference Manual for the
Storage Subsystem.
These tasks can be done only through the CIP subsystem:
• ABORT CLIM $ZZCIP.clim-name
• ADD CLIM $ZZCIP.clim-name
• DELETE CLIM $ZZCIP.clim-name
• NAMES CLIM $ZZCIP.clim-name
• START CLIM $ZZCIP.clim-name
• STATS CLIM $ZZCIP.clim-name
• STOP CLIM $ZZCIP.clim-name
• TRACE CLIM $ZZCIP.clim-name
• VERSION CLIM $ZZCIP.clim-name
Table 21 (page 204) compares tools and tasks on IOAM or CLIM operations:
Table 21 IOAM and CLIM Based Operations Comparison
CLIM Based OperationsIOAM Based OperationsTool/Task
Storage CLIMFCSACommunication device
SAS disk enclosureFiber channel disk module FCDMBuilt-in storage
204 Storage CIP Migration, Compatibility and Operational Differences