IBM 5000 manual SCSI Devices, SCSI IDs, Installing or Removing Internal Drives

Installing or Removing Internal Drives

SCSI Devices

Your Netfinity 5000 server supports drives that comply with American Natio 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					supported on		your	Netfinity 500
to	http://www.pc.ibm.com/support/			on the World Wide Web.
If you install additional SCSI				devices,		you must	set	a unique		identifi
each SCSI device. This enables				the	SCSI	controller	to	identify the devi
ensure that different			devices	do not attempt to transfer data at th
Note:	Any	information about SCSI		drives	also applies		to	other	SCSI	device
	as	scanners and	printers.

SCSI IDs

If	you	install SCSI devices, you must set a unique	identification					(ID
device that you connect to your server. This enables the					SCSI controlle
the	devices and ensure that different devices do		not	attempt			to	tra
same	time.
The	SCSI controller in your server supports SCSI IDs 0		to	15;		ID	7	is
the	controller, ID 14 is reserved for the daughterboard (SAF-TE) on th
backplane. Use the SCSISelect Utility program to view			the		SCSI	IDs		of
devices		in your server. (See “Using the SCSISelect Utility			Program”			on
for	more	information.)

Note: A daughterboard is a secondary adapter that can be plugged int adapter or the system board. The SAF-TE daughterboard on the DASD backplane makes available the status information about the DASD driv that meet the following conditions:

Ÿ	The	drives	are part of a RAID environment
Ÿ	The	status	information comes from a supported IBM RAID adapte

If you install wide (16-bit) SCSI devices, you can set the IDs to a between 0 and 6, or to any whole number between 8 and 13, or to 15. install narrow (8-bit) SCSI devices, you can set the IDs to any whole between 0 and 6.

Your

server

automatically

sets

SCSI

IDs for hot-swap hard

disk

drives,

the

jumper settings on the

DASD

backplane. Your

server

uses

the

hard

d

SCSI

IDs to

send

status

information

to the indicator lights

on

each

ha

See “Status Indicators” on page 9 for the

location and

identification

o

drive

status

lights.

Table 2

shows

the

default

SCSI

IDs

that

the

backplane

assigns

for hot

disk

drives.

Table

2. Automatically Assigned SCSI IDs

Bay

1

2

3

4

5

ID

0

1

2

3

4

58 Netfinity 5000 Server Hardware Information and Procedures