290 iSeries and AS/400e System Builder
#5703 #5703 PCI-X RAID Disk Unit Controller
The #5703 PCI-X RAID Disk Unit Controller is an Ultra3 SCSI controller with a cache size of 40 MB that provides RAID-5
protection for internal disks and internal tape units, CD-ROM, DVD-RAM and DVD-ROM units. The #5703 has two Ultra3
SCSI buses. In addition to providing RAID-5 protection for disks, the #5703 is designed to work as a high performance
controller for disks protected by system mirroring or disks with no protection. In the RAID-5 configuration, disk unit
protection is provided at less cost than mirroring, and with better performance than system checksum.
The #5703 controller supports a maximum of 12 disk units.
Due to a system unit and external tower disk unit cage SCSI bus designs, only the 270 Models, and the #0595/#5095 PCI-X
Expansion Tower have a suitable system configuration to allow 12 disk units to attach to a single #5703. All other system
unit and tower disk configurations restrict the number of attaching disk units to 10 or less.
A minimum of three disk units of the same capacity are needed for a valid RAID-5 configuration. A maximum of four arrays
are allowed per controller, with a maximum of 12 disk units allowed per array. All disk units in an array must be of the same
capacity. Parity is spread across either two, four, or eight disk units in an array. If an array of three disk units is started, parity
is spread across two disk units. If an array of four to seven disk units is started, parity is spread across four disk units. If an
array of 8-12 disk units is started, parity is spread across eight disk units.
The number of arrays and size of each array can be influenced by specifying an optimization of either
Balance,
Performance, or Capacity in iSeries Navigator when starting arrays. An optimization of Balance is used by default when
starting arrays from the green screens. If disk units are included into an existing array, parity can be spread across fewer
than the preferred number of disk units. In this case the RAID function must be stopped and then started to redistribute the
parity.
The #5703 controls up to two removable media devices (internal tape, CD-ROM, DVD-RAM, DVD-ROM).
The #5703 does not support the attachment of external devices.
The #5703 is the recommended replacement for the #2782 PCI-X RAID Disk Unit Controller.
When ordered as #0628 - Direct Attach - #5703 PCI-X RAID Disk Unit Controller, an IOP is not required. When attached
directly to a Linux/AIX partition, the #5703 cannot be accessed by OS/400 partitions.
Minimum operating system level: OS/400 V5R2
The #5703 is a Customer Install Feature
The #5703 is the recommended replacement for the #2782 PCI-X RAID Disk Unit Controller.
#5704 #5704 PCI-X Fibre Channel Tape Controller
The #5704 PCI-X Fibre Channel Tape Controller provides Fibre Channel attachment capability for external tape devices.
The #5704 supports point-to-point and arbitrated loop topologies and has an LC-type cable connector. Each #5704 is
shipped with a wrap connector (part number 05N6767). The #5704 supports 64-bit, 133MHz PCI-X bus speeds. It is the
PCI-X card replacement for the #2765 PCI Fibre Channel Tape Controller.
All Fibre Channel cables required for the #5704 PCI-X Fibre Channel Tape Controller are supplied by the client.
Supported devices include:
3582-L23 Ultrium Tape Library
3583-Lxx Ultrium Scalable Tape Library
3584-L32 or D32 Ultra scalable Tape Library
3590 ½-inch Cartridge Tape Subsystem Models E11, E1A, H11, and H1A
3592 Enterprise Tape Drive
The #5704 does not support the Alternate IPL device function. A D-mode IPL is required using CD-ROM, DVD-ROM, or
another alternate IPL tape device. Then select a #5704 to complete the installation or recovery process.
Minimum operating system level: OS/400 V5R2
The #5704 is a Customer Install Feature.
A #5703 is the recommended replacement for the #2782.
