Chapter 5. IBM AS/400e 720, 730, and 740 models 157
#9754 #9754 MFIOP with RAID (Ultra SCSI) CCIN 6754
The #9754 is an Ultra SCSI controller that provides unprotected, mirrored, or RAID-5 protection for internal disk units. It
includes a 4M write cache for better performance and improved device utilization. The #9754 controls the internal CD-ROM
drive and one internal tape unit. It contains three IOA slots for communications, LAN, and twinaxial I/O adapters. IOA slot
A is reserved for attaching one #2699 Two-Line WAN IOA, or one #6149 16/4 Mbps Token Ring IOA or #6181 ASCII
Workstation Controller. IOA slot B is reserved for attaching the #9699 Base 2-Line WAN IOA. IOA slot C is reserved for
attaching one #2699 Two-Line WAN IOA or one #6180 Twinaxial Workstation IOA or #9280 twinaxial IOA. It is occupies
two card slots.
The #9754 controls Ultra, Fast Wide, and Fast Narrow SCSI disk units located in the 730 or 740 system unit, and the #5055
Storage Expansion Unit or the #5057 Storage Expansion Unit. The Ultra SCSI disks give the best performance when
attached to the #9751. The #9754 also controls disks that are not Ultra SCSI. However, in that case, the disks do not
perform at Ultra SCSI speeds.
The #9754 supports a maximum of 20 disk units, one removable tape unit, and one CD-ROM unit. A maximum of 10 disk
units per RAID-5 array is supported. Parity information can be spread across four or eight disk units. A maximum of four
RAID-5 arrays is supported on one #9754. Disk units that are not supported in a RAID-5 array can be attached to the #9754
in either an unprotected or a mirrored environment.
The #5544 System Console on Operations Console is the default for the initial 720, 730, and 740 installation. The #0328
Operations Console Cable is used unless another console controller is specified. The #0380 Remote Control Panel Cable
can be used to support the Remote Control Panel function. The #0380 cable does not attach to a communication port.
Supported on Models 730 and 740
Minimum operating system level: OS/400 V4R2
Minimum operating system level to support integrated hardware disk compression: OS/400 V4R3
Communications
Comm.
Restrictions
See “Comm. Restrictions” on page 103, for communications rules and restrictions.
#2605 #2605 ISDN Basic Rate Interface Adapter (SPD)
The #2605 connects to #2623 to support one communications line connecting to an ISDN network. The ISDN Basic Rate
Interface supported by #2605 contains two high-speed ISDN user channels. One or two #2605s can be attached to one
#2623 with no other IOAs allowed on the #2623.
SPD slots required: None
Prerequisite: #2623 6-line Communications Controller
#2609 #2609 EIA 232/V.24 Two-Line Adapter (SPD)
The #2609 connects to #2623 to support two communications lines using Async, BSC, SDLC, or X.25 protocols. Two
cables must be specified:
#9023 EIA 232/V.24 20-ft (6 m) enhanced cable
#9835 EIA 232/V.24 50-ft (15 m) enhanced cable
#9022 EIA 232/V.24 20-ft (6 m) cable
#9836 EIA 232/V.24 50-ft (15 m) cable
SPD slots required: None
Prerequisite: #2623 6-line Communications Controller
#2610 #2610 EIA 232/V.24 Two-Line Adapter (SPD)
The #2610 connects to #2623 to support two communications lines using X.21 or X.25 networks. Two cables must be
specified:
#9021 X.21 20-ft (6 m) cable
#9839 X.21 50-ft (15 m) cable
SPD slots required: None
Prerequisite: #2623 6-line Communications Controller
