IBM RS/6000 SP Handbook page 224

At least 9 GB of disk storage. If the SP is going to use an HACWS
configuration, you can configure 9 GB of disk storage in the rootvg volume
group and 9 GB for the spdata in an external volume group. Because the
control workstation is used as a Network Installation Manager (NIM) server,
the number of unique file sets required for all the nodes in the SP system
might be larger than a normal single system. You should plan to reserve 6 GB
of disk storage for the file sets and 2 GB for the operating system. This will
allow adequate space for future maintenance, system mksysb images, and
LPP growth. Keep in mind that if you have nodes at different levels of PSSP
or AIX, each node requires its own LPP source, which will take up extra
space. A good rule of thumb to use for disk planning for a production system
is 4 GB for the rootvg to accommodate additional logging and /tmp space plus
4 GB for each AIX release and modification level for lppsource files.
Additional disk space should be added for mksysb images for the nodes.If
you plan on using rootvg mirroring, then for one mirror, double the number of
physical disks you estimated so far. For two mirrors, triple the estimate.
You might plan to use the control workstation to initially build your own
customized mksysb AIX image. One reason might be that you want to enable
the AIX trusted computing base option. If you plan to create a customized
mksysb for any reason, you must have at least two physical disks in the
control workstation, one for the alternate volume group (not rootvg) that the
mksysb command will use for the output.
Physically installed with the RS-232 cable to within 12 meters of each SP
frame.
Physically installed with two RS-232 cables to within 12 meters of each
SP-attached server or Clustered Enterprise Server M/T 7017. Physically
installed with one RS-232 cable to within 12 meters of each SP-attached
server or Clustered Enterprise Server M/T 7026.
Equipped with the following I/O devices and adapters:
– A 3.5 inch diskette drive.
– Four or eight millimeter (or equivalent) tape drive.
– A SCSI CD-ROM device.
– One RS-232 port for each SP frame.
– Keyboard and mouse.
– Color graphics adapter and color monitor. An X-station model 150 and
display are required if an RS/6000 that does not support a color graphics
adapter is used.
– An appropriate network adapter for your external communication network.
The adapter does not have to be on the control workstation. If it is not on
the control workstation, the SP Ethernet must extend to another host that
200 RS/6000 SP and Clustered IBM ^ pSeries Systems Handbook