This chapter explains how to install and remove the 1.05 Gbyte hard disk drive in the SPARCstation 2 system.
Caution -
Before you begin:
Recently released Sun systems and peripherals are now supplied with new regulated (active) SCSI terminators. Previously, Sun supplied standard SCSI terminators. Both types are shown below.
All SCSI systems must be terminated at the first and last units attached to the SCSI bus. A terminator is built in to all SBus SCSI cards and to all host systems. For the last unit attached to the SCSI bus, the new regulated terminators provide the improved impedance matching required for fast SCSI.
The total SCSI bus length (including internal and external SCSI cables) for each single ended SCSI bus, as shown below, must not exceed 6 meters (20 feet). Refer to Appendix A for more information.
To remove the cover of the system unit:
If you are installing the drive into a new system, plug the power cord into the back of the system and into a grounded AC outlet. Do not turn the system on.
Figure 2-1 Removing the SPARCstation 2 Cover
Figure 2-2 shows the various subassemblies of the SPARCstation 2 system, including the power supply. The left, front area of the chassis is reserved for two hard disk drives.
The wrist strap provides grounding between your body and the chassis for static electricity. Electric current and voltage do not pass through the wrist strap.
Caution -
To attach the wrist strap:
Note - Do not have the wrist strap attached and the system powered up when you handle the drive to verify the jumper settings.
Two types of drive kits can be ordered:
If you ordered a complete drive kit, the box should contain:
If you ordered a replacement drive, the kit will contain only the hard disk drive.
To unpack the drive:
Compare the packing list with the equipment you received.
The three sets of jumper blocks on the 1.05 Gbyte hard disk drive are located on the sides and underside of the drive. Two of the blocks are indicated below. The third block, which is located on the backside of the drive and not shown in Figure 2-3, must remain unjumpered.
Figure 2-3 1.05 Gbyte Hard Disk Drive Jumper Locations
As shown above, there are two sets of jumper blocks that you need to check on for the 1.05 Gbyte drive:
The 1.05 Gbyte hard disk drive is a SCSI (Small Computer Systems Interface) device. Each SCSI device in your system needs a specific and unique SCSI ID.
Refer to the handbook that is appropriate for your operating system to determine which SCSI addresses are available to you.
To determine the number of internal disk drives in your computer system and their SCSI addresses:
See your handbook for SMCC peripherals if you need help.
You should now see the ok prompt.
If you need references to help with the commands listed, see the handbook that came with your peripheral.
Each drive is automatically assigned a SCSI ID number. Table 2-1 lists the disk drive SCSI ID numbers for the disk drive jumpers of each drive.
Table 2-1 Target ID Jumpers
-------------------------------------------------------
Drive Location Target ID Jumper Settings SCSI Address -------------------------------------------------------
Position 0 A0-Installed 3
A1-Installed
A2-Not Installed
Position 1 A0-Installed 1
A1-Not Installed
A2-Not Installed
-------------------------------------------------------
To verify the SCSI ID jumpers:
Do not remove the drive bracket (if attached).
If the device address jumper settings are the same as in Figure 2-4, leave them as they are.
If the settings are not the same, change them to match the settings in the figure. Use a needlenose pliers to install or remove jumpers.
Figure 2-4 Drive Position 0 Jumper Settings
If the device address jumper settings are the same as in Figure 2-5, leave them as they are.
If the device address jumper settings are not the same, change them to match the settings in Figure 2-6. Use a needlenose pliers to install or remove jumpers.
Figure 2-5 Drive Position 1 Jumper Settings
To verify the configuration jumpers for a drive in position 0 or 1:
If the jumper settings are the same as in Figure 2-6, leave them as they are.
If the jumper settings are not the same, change them to match the settings in the figure. Use a needlenose pliers to install or remove jumpers.
Figure 2-6 Configuration Jumper Settings
---------------------------------------
Acronym Description ---------------------------------------
RS (Reserved)
DS Delayed Start
ME Motor Enable (Remote Spin-up)
WP Write Protect
PE Parity Enable
SS (Reserved)
TP Term Power from Drive
TP Term Power to SCSI Bus
---------------------------------------
Refer to Figure 2-7 for the location of the drives. If you are installing one disk drive, place the drive in position 0 (near the side of the chassis). To install a drive, refer to the section, "Installing a Hard Disk Drive."
Figure 2-7 Drive Locationss
Two types of disk drive mounting devices are available: drive brackets and grommets.
The SPARCstation 2 system uses a drive bracket to attach the drive to the chassis. 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 2-8.
To install a hard disk drive:
Figure 2-8 Attaching the Drive Bracket to the Drive
The connecting power and data cables are keyed so they will only fit one way.
.
Figure 2-9 Connecting Data and Power Cables to the Drive
Align the four mounting tabs on the bottom of the mounting bracket with the slots in the bottom of the chassis.
You will hear a click when the two rear locking tabs are seated firmly in their slots.
Figure 2-10 Installing a Drive in a SPARCstation 2 System
Refer to Figures 2-10 and 2-11.
For the drive in position 0:
For the drive in position 1:
Figure 2-11 Connecting the Power and Data Cables to the System
Refer to the section, "Replacing the SPARCstation 2 Cover."
A regulated terminator is shown below.
The installation procedure for replacing a drive requires that you remove the drive bracket, the data cable, and the power cable from the previously installed drive and install them on the replacement drive. A drive bracket and drive cables are not shipped with a replacement drive.
Caution - Do not disconnect the power cord from the system unit power outlet or from the wall outlet. This connection provides the ground path necessary to safely remove and install the hard disk drive.
To remove a hard disk drive:
Before turning off the system power, you must halt the operating system.
Refer to the section, "Removing the SPARCstation 2 Cover."
Refer to the section, "Attaching a Wrist Strap."
Figure 2-12 Removing a Hard Disk Drive
To replace the SPARCstation 2 cover:
Gently guide the plastic tabs on the front of the cover into the tab slots on the front of the chassis while continuing to hold the cover.
Be sure the security loop clears the diskette drive (if installed) and seats into the security loop slot on the bottom of the chassis.
Figure 2-13 Replacing the SPARCstation 2 Cover
Caution -
You are now ready to power on the system.
Turn on the power switches in this order:
If you replaced a hard disk drive containing your operating system, you must install your operating system onto the hard disk. Refer to the software manuals that were shipped with your operating system for complete instructions.
Boot the system:
After you boot the operating system, log in at the login prompt.
For a newly installed peripheral device to work with a computer system, its device driver must be added or activated. Procedures for adding or activating a device driver differ among operating systems.
For example, if your system is running SunOS Version 4.x, you might need to modify the system kernel and make changes to the /dev directory by running the MAKEDEV command.
