This chapter explains how to remove a disk drive and how to install a 1.05 Gbyte hard disk drive in the SBus Expansion Subsystem, commonly referred to as SBus.
Before you begin:
The information in this chapter is presented in the following manner:
Note - See Appendix B for descriptions of SCSI ports, types of connections, SCSI termination, and cable length.
Refer to the next page for a graphical representation on how to remove the cover; to attach a wrist strap; and to replace the cover. The figure is supported by the procedures presented on this page.
If you are installing the drive into a new subsystem, plug the power cord into the back of the subsystem and into a grounded AC outlet. But do not turn the subsystem on.
Gently push the cover towards the front of the chassis about 1/2 inch (13 mm) so that the plastic tabs on the cover clear the chassis.
The wrist strap provides grounding between your body and the chassis for static electricity.
Caution -
When you have finished working within the SBus subsystem:
Figure 5-1 Opening and Closing the SBus System
Refer to the next page for a graphical representation on how to remove a disk drive from the chassis and how to remove the drive mounting bracket. The figure is supported by the procedures presented on this page.
The procedure for replacing a drive requires that you remove the drive bracket from the previously installed drive and install it on the replacement drive since a bracket is not shipped with the replacement drive.
Caution -
See Chapter 1, "Before You Start."
Drive position 0 is located in the corner of the chassis. Drive position 1 is located between the diskette drive and Drive position 0.
Place the removed drive on an antistatic surface.
Figure 5-2 Removing a Disk Drive
This section describes the procedures to install a 1.05 Gbyte disk drive into the SBus subsystem. If you are installing only one disk drive, place that drive in Drive position 0 (in the corner).
You can order the following types of drive kits:
If you ordered a complete drive kit, the shipping box should contain the following components:
The first step for an installation is to unpack the disk drive from the shipping box. Compare the packing list with the hardware you received. Place the drive on an antistatic surface, such as the antistatic bag the drive was shipped in, with the PCB side up. Save the box and the packing material in case you have to ship the drive at some future date.
The drive you have received is a standard connector, 1.05 Gbyte low profile SCSI disk drive. It is approximately 1 inch high and 3.5 inches wide. It supports fast SCSI at 10 Mbytes per second. Turn to the next page to view drawings of the Seagate and of the Conner 1.05 Gbyte drives and compare them with the drive you received to determine which vendor manufactured it.
While all performance specifications are exactly the same for both drives, the jumper locations and settings are different for each drive. Once you have identified which drive you have, only follow the instructions for that specific drive.
Once you have determined which drive you have, you should inspect it to locate the jumpers and to verify their settings (as described in the following section).
If you ordered just a replacement drive, the shipping box should only contain one of the two 1.05 Gbyte low profile disk drives shown below:
Figure 5-3 The Seagate 1.05 Gbyte Disk Drive
Figure 5-4 The Conner 1.05 Gbyte Disk Drive
Perform the following procedures to unpack and inspect the drive. Starting with the Seagate drive, refer to the next page for graphical representations of the two drives on what to look for on your drive. The figures are supported by the procedures presented on this and the following pages of this section.
Note - Have the wrist strap attached and the external power cord connected to the subsystem and to the power outlet when you handle the drive to verify the jumper settings. Do not have the subsystem powered up when you do this.
See Figure 5-5 for the Seagate drive and Figure 5-7 for the Conner drive. These figures represent how the jumpers should be set when you receive your drive.
For the Seagate drive, see Table 5-1 for a description of each jumper, and Table 5-2 for the target address settings.
For the Conner drive, see Table 5-3 for a description of each jumper, and Table 5-4 for the target address settings.
See Figure 5-2 to identify the drive positions.
If the settings are the same, leave them as they are. If the settings are not the same, change them to match the settings in the figure. Use needlenose pliers to install or remove jumpers.
If the settings are the same, leave them as they are. If the settings are not the same, change them to match the settings in the figure. Use needlenose pliers to install or remove jumpers.
Figure 5-5 General Jumper Locations and Position 0 Settings of the Seagate Drive
See Table 5-1 for a description of the configuration jumpers on the Seagate drive, and Table 5-2 for the target address jumper settings.
Table 5-1 Configuration Jumper Descriptions of the Seagate Drive
---------------------------------------
Acronym Description Factory Set ---------------------------------------
SS (Reserved) No
DS Delayed Start No
ME Motor Enable Yes
WP Write Protect No
PE Parity Enable Yes
TE Terminator Enable No
TP Term Power from No
Drive
TP Term Power to No
SCSI Bus
---------------------------------------
Table 5-2 Target Address Jumper Settings of the Seagate Drive
-----------------
TARGET A0 A1 A2 -----------------
0
1 X
2 X
3 X X
4 X
5 X X
6 X X
-----------------
Figure 5-6 Position 1 Target Address Settings of the Seagate Drive
Figure 5-7 General Jumper Locations and Position 0 Settings of the Conner Drive
Figure 5-8 Position 1 Target Address Settings of the Conner Drive
See Table 5-3 for a description of each jumper on the Conner drive, and Table 5-4 for the target address jumper settings.
Table 5-3 Jumper Descriptions of the Conner Drive
-------------------------
JUMPER DESCRIPTION -------------------------
E1 ID Select
E2 ID Select
E3 ID Select
E4 (Reserved)
E5 Motor Enable
E6 Delay Spin
E7 Disable Parity
E8 SCSI Terminator
Power
-------------------------
Note - The E3, E4, E6, E7 and E8 jumpers, and all of the serial port pins are not to be jumpered.
Table 5-4 Target Address Jumper Settings of the Conner Drive
-----------------
TARGET E1 E2 E3 -----------------
0
1 X
2 X
3 X X
4 X
5 X X
6 X X
-----------------
The 1.05 Gbyte hard disk drive is a Small Computer Systems Interface (SCSI) device. Each SCSI device in your system needs a specific and unique SCSI ID. Refer to the software handbook that is appropriate for your operating system to determine which SCSI addresses are available to you.
Perform the following procedure to determine the number of internal disk drives in your computer system and their SCSI addresses. If all available address settings (0-3) are assigned for SCSI bus 0, you must add an SBus card which provides another SCSI port (bus) if you are running on SunOS 4.1.x.
See the appropriate software handbook.
You should now see the ok prompt.
A list of the devices attached to the SCSI bus of the host should be displayed.
If you need help with the listed commands, see the handbook appropriate for your operating system.
Note - Before you set the device address jumpers on the disk drive, make sure you check the device addresses already assigned for your system. Do not assign two devices the same device address.
Refer to the table below for the SCSI target address settings for both the Seagate or the Conner drive in either Drive position 0 or Drive position 1. These settings are only recommendations and you must change them according to your specific configuration.
Table 5-5 SCSI Settings
------------------------------------------------
DRIVE JUMPER SETTINGS SCSI TARGET POSITION ADDRESS SETTINGS ------------------------------------------------
Position 0 A0/E1-Jumpered 3
A1/E2-Jumpered
A2/E3-Not Jumpered
E4-Not Jumpered
E5-Jumpered
E6-Not Jumpered
E7-Not Jumpered
Position 1 A0/E1-Jumpered 1
A1/E2-Not Jumpered
A2/E3-Not Jumpered
E4-Not Jumpered
E5-Jumpered
E6-Not Jumpered
E7-Not Jumpered
------------------------------------------------
Each drive has a SCSI ID number assigned to it. Table 5-6 lists the disk drive SCSI ID numbers for the disk drive jumpers of each drive.
Table 5-6 Recommended Target Address Jumper Settings (SunOS 4.x)
-----------------------------------------------------------------
If you are connecting the SBus Expansion Sub Target system to one of the following computer systems: Address -----------------------------------------------------------------
SPARCstation 2 or 10 (or any other desktop system 0 or 2
with 2 disk drives)
SPARCstation IPX, IPC, LX, SPARCclassic (or 0 or 1 or 2
another desktop system with 1 disk drive)
SPARCsystem 630 0 or 2
FSBE/SBE/SSHA 0 or 1 or 2
or 3
-----------------------------------------------------------------
Refer to the next page for a graphical representation on how to install the drive mounting bracket and how to install a disk drive. The figure is supported by the procedures presented on this page. Regarding the drive mounting bracket, if grommets (small screw-type connectors) came with your drive kit, do not use them. Grommets are used to install disk drives into other SPARCstation systems, such as the SPARCstation 10 system. The 1.05 Gbyte disk drive and its plastic mounting bracket are secured to the chassis by four mounting tabs and two locking tabs. These tabs fit into corresponding slots in the bottom of the chassis.
Refer to Figure 5-9 to identify the drive positions.
Fasten the bracket to the drive by inserting and tightening the four screws through it and into the bottom of the drive. If needed, remove the bracket from the old drive. If the drive bracket is already connected to the drive, go to the next step.
The connectors are keyed so that they can only fit one way.
Align the four mounting tabs on the bottom of the mounting bracket with the slots in the bottom of the chassis.
Listen for a click when the two rear locking tabs become firmly seated in their slots.
Figure 5-9 Installing a Disk Drive
You must use the regulated SCSI terminator that was shipped with the drive and replace any non-regulated terminator.
You must replace any nonregulated terminators.
System configuration occurs after a system is successfully powered on. If the system shutdown was performed according to the procedure in the software handbook, your system should automatically configure when you power on the system.
To complete the installation of the 1.05 Gbyte low profile disk drive into your SBus Expansion Subsystem:
