•
The only supported Fibre Channel switches are the 8/16 Port DSGGA
or DSGGB.
•
The only supported Fibre Channel hub is the 7-port SWXHB-07. The
SWXHB-07 has clock and data recovery on each port. It also features
Giga Bit Interface Converter (GBIC) transceiver-based port connections
for maximum application flexibility. The hub is hot pluggable and is
unmanaged.
•
The Fibre Channel switches support both shortwave (GBIC-SW) and
longwave (GBIC-LW) GBIC modules. The GBIC-SW module supports
50-micron multimode fibre cables with the standard subscriber connector
(SC) in lengths up to 500 meters. The GBIC-LW supports 9-micron,
single-mode fibre cables with the SC in lengths up to 10 kilometers.
The KGPSA-BC PCI-to-optical Fibre Channel host bus adapter and the
HSG80 RAID controller support the 50-micron Gigabit Link Module
(GLM) for fibre connections. The KGPSA-CA adapter also supports
only shortwave multimode connections. Therefore, only the 50-micron
multimode fibre optical cable is supported for cluster configurations.
You must install GBIC-SW GBICs in the Fibre Channel switches and
hubs for cluster use.
•
The Fibre Channel RAID Array 8000 (RA8000) midrange departmental
storage subsystem and Fibre Channel Enterprise Storage Array 12000
(ESA12000) house two HSG80 dual-channel controllers. There are
provisions for six UltraSCSI channels.
•
The TruCluster Software Products support only disk devices attached to
the HSG80 Fibre Channel to Six Channel UltraSCSI Array controller.
No tape devices are supported.
•
Tru64 UNIX Version 4.0F limits the number of SCSI targets (whether
they are systems or storage controller ports) on each shared SCSI bus
(whether implemented in parallel SCSI or Fibre Channel) to eight.
•
Because Tru64 UNIX Version 4.0F also limits the logical unit numbers
(LUNs) per SCSI target to eight, each HSG80 controller port can present
only eight storage devices. The customer can define the number of LUNs
presented on each of the two SCSI targets allocated to the HSG80 ports,
depending on the application requirements.
•
A storage array with dual-redundant HSG80 controllers is two targets
and consumes four ports on a switch or hub.
•
Each KGPSA is one target.
•
The TruCluster Software Products only support the HSG80 enabled for
transparent failover mode.
•
The HSG80 documentation refers to the controllers as Controller A (top)
and Controller B (bottom). Each controller provides two ports (left and
Fibre Channel Hardware, Requirements, and Restrictions 2–3
