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Feature code
1951
1952
It is recommended that each processor card (if more than a single card is present) have an
equal amount of memory installed. Balancing memory across the installed processor cards
allows distributed memory accesses that provide optimal performance. The memory
controller will detect a variety of memory configurations of mixed memory sized DIMMs and
DIMMs installed in pairs.
1.3.3 Disk and media features
The minimum OpenPower 720 configuration includes a 4-pack disk drive enclosure. A second
4-pack disk drive enclosure can be installed by ordering FC 6592 (integrated controller
driven) or FC 6593 (additional adapter driven); therefore, the maximum internal storage
capacity is 2.4 TB (using the disk drive features available at the time of writing). The
OpenPower 720 also features two slim-line media device bays and one half-height media bay.
The minimum configuration requires at least one disk drive. Table 1-5 shows the disk drive
feature codes that each bay can contain.
Table 1-5 Disk drive feature code description
Feature code
1970
1968
1971
1969
1972
1973
Any combination of DVD-ROM and DVD-RAM drives of the following devices can be installed
in the two slim-line bays:
DVD-RAM drive, FC 1993
DVD-ROM drive, FC 1994
A logical partition running a supported release of the Linux operating system requires a
DVD-ROM drive or DVD-RAM drive to provide a way to boot hardware diagnostics from CD.
Supplementary devices can be installed in the half-height media bay, such as:
IBM 80/160 GB Internal Tape Drive with VXA Technology, FC 1992
60/150 GB 16-bit 8 mm Internal Tape Drive, FC 6134
36/72 GB 4 mm Internal Tape Drive, FC 1991
1.3.4 USB diskette drive
For today's administration tasks, an internal diskette drive is not state-of-the-art. In some
situations, the external USB 1.44 MB diskette drive for OpenPower 720 systems (FC 2591) is
helpful. This super-slim-line and lightweight USB V2 attached diskette drive takes its power
requirements from the USB port. A USB cable is provided. The drive can be attached to the
Description
4GB (2x 2048 MB) DIMMs, 266 MHz, DDR1 SDRAM
8GB (2x 4096 MB) DIMMs, 266 MHz, DDR1 SDRAM
Description
36.4 GB 15 K RPM Ultra3 SCSI disk drive assembly
73.4 GB 10 K RPM Ultra3 SCSI disk drive assembly
73.4 GB 15 K RPM Ultra3 SCSI disk drive assembly
146.8 GB 10 K RPM Ultra3 SCSI disk drive assembly
146.8 GB 15 K RPM Ultra3 SCSI disk drive assembly
300 GB 10 K RPM Ultra3 SCSI disk drive assembly
Chapter 1. General description
7
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