Note
To locate connectors on the system board, see
“System Board” on page 96.
The following are some important points to remember
when connecting power and signal cables to internal
drives:
The diskette drive, hard disk drive, and CD-ROM
drive that are preinstalled in the server come with
power and signal cables attached. If you replace any
drives, it is important to remember which cable is
attached to which drive.
When you install a drive, ensure that the connector at
the end of the signal cable is connected to the system
board.
If two IDE devices are used on a single cable, one
must be designated as the primary or master device
and the other a secondary or subordinate device;
otherwise, some of the IDE devices might not be
recognized by the system. The primary or secondary
designation is determined by switch or jumper
settings on each IDE device.
In this server, the CD-ROM drive is the primary
device. If you install a second IDE device, it must be
the secondary device.
To attach an external SCSI drive, you must install an
appropriate adapter in the server.
SCSI Drives
Note
Any information about SCSI drives also applies to
other SCSI devices, such as scanners and printers.
The Netfinity 3500 server supports drives that comply with
American National Standards Institute (ANSI) SCSI
Standards X3.131-1986 (SCSI), X3.131-1994, (SCSI-2),
X3.277-1996 (SCSI-3 Fast-20 parallel interface), and
X3.253-1995 (SCSI-3 parallel interface).
For a complete list of the SCSI devices that the server
supports, go to http://www.pc.ibm.com/us/server/ on the
World Wide Web.
SCSI Physical Unit Numbers:
When more than one
physical device is connected to the same UltraSCSI
controller, the devices compete for support from the
UltraSCSI controller. Because the UltraSCSI controller
communicates with only one device at a time, the priority
of a device is based on its SCSI identification (ID). The
highest priority IDs are 7 to 0; the lowest priority IDs are
15 to 8.
68
IBM Netfinity Servers HMM
Summary of Contents for Netfinity 3500 Series
Page 2: ......
Page 6: ...iv IBM Netfinity Servers HMM...
Page 8: ...vi IBM Netfinity Servers HMM...
Page 100: ...Assignments 92 IBM Netfinity Servers HMM...
Page 151: ......
Page 152: ...IBM Part Number 10L9833 Printed in U S A S 5L 19 8 1...