User`s guide

1.3.4 HS Array Controllers
The card cage assembly contains two slots for controller and cache memory
modules. These slots provide the mechanical mounting, power, and signal
interfaces for the units they house. This assembly allows for the mounting of two
controllers to provide redundancy.
Note
This manual covers minimal controller functionality. All other
information on controllers, such as a list of storage devices controlled
by individual controllers, warm swap procedures, and controller-terminal
connections is covered in the specific controller documentation.
The HS-controllers provide a connection between a host computer and an array
of SCSI–2 compatible storage devices. A terminal is plugged into the controller
during subsystem installation to set initial controller parameters. See the
StorageWorks Array Controllers HS Family of Array Controllers User’s Guide for
details.
The SW300 can be configured for controller dual redundancy. See the HS
controller documentation to determine warm swap procedures for each controller.
As shown in Table 1–2, the SW300 enclosure supports the following HS
controllers:
Table 1–2 HS Controllers
Controller Interface Storage Device Buses
HSD30 Digital standard system system
interconnect (DSSI)
Six 8-bit single-ended SCSI–2
HSJ30 Computer Interconnect (CI™) bus Six 8-bit single-ended SCSI–2
HSJ40 CI bus Six 8-bit single-ended SCSI–2
HSZ10 Fast, wide, differential SCSI Five 8-bit single-ended SCSI–2
HSZ15 Fast, wide, differential SCSI Five 8-bit single-ended SCSI–2
HSZ40 Fast, wide, differential SCSI Six 8-bit single-ended SCSI–2
For a list of the storage devices controlled by individual controllers, see the
StorageWorks Array Controller Operating Firmware Release Notes.
1–8 Introduction to the SW300 Enclosure