This chapter provides troubleshooting flowcharts, defines required hardware, and explains how to determine the SCSI addresses assigned by the system.
Tables 1-1 through 1-9 show flowcharts illustrating what corrective actions to take when a problem occurs.
Figure 1-1 LED Not Lit
Figure 1-2 Fan Not Blowing
Figure 1-3 Drive Not Responding
Figure 1-4 SCSI Address Conflict
Figure 1-5 Power On Procedure
Figure 1-6 SCSI Cable Will Not Plug Into SCSI Port
Figure 1-7 Operating System Does Not Recognize Disk Drive at Bootup
Figure 1-8 Slow Disk Drive Response
Figure 1-9 LED on Terminator Not Lit
To take advantage of the "fast SCSI" capabilities of the disk drives in the Multi-
Disk Pack (transfer rate of 10 Mbytes per second across the SCSI-2 bus), the
Multi-Disk Pack should either be connected to an FSBE/S SBus card
("fast SCSI" host adapter port and buffered Ethernet port) or to a built-in SCSI
host adapter port of a computer system supporting "fast SCSI."
If the Multi-Disk Pack is connected to an SBus card or to a computer system with a 5 Mbyte per second SCSI host adapter port, the disk drives in the unit will operate at the 5 Mbyte per second SCSI-2 transfer rate. Table 1-1 shows the hardware requirements.
Table 1-1 Hardware Required
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System Built-in SCSI SCSI Host SCSI Host Host Adapter Speed Adapter cards Adapter cards** (Mbytes per second) 5 Mbyte/sec 10 Mbyte/sec SCSI-2 transfer SCSI-2 transfer rate rate ------------------------------------------------------------------------------------------------------------------------------------------------
SPARCstation IPC system 5 SSHA* FSBE/S
SPARCstation IPX system 5 SSHA* FSBE/S
SPARCstation 2 system 5 SSHA* FSBE/S
SPARCstation 10 system 10 SBE/S, SSHA* FSBE/S
SPARCstation ELC system 5 No SBus slots No SBus slots
Not supported Not supported
SPARCstation LX system 10 SSHA* FSBE/S
SPARCclassic system 10 SSHA* FSBE/S
SPARCserver 630 system 5 (early models) SBE/S FSBE/S
10 (later models)
SPARCserver 670 system 5 (early models) SBE/S FSBE/S
10 (later models)
* SSHA is the SBus SCSI Host Adapter card. Requires boot PROM version 1.3 or higher.
Booting from the SSHA requires boot PROM version 2.0 or higher.
** FSBE/S requires boot PROM version 2.0 or higher.
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If the Multi-Disk Pack connects to a computer system running the generic
operating system kernel of any SunOS 4.x operating system supported release
(Solaris
If the Multi-Disk Pack connects to a computer system running the Solaris 2.1 operating system or later operating system releases, you can assign SCSI addresses 0 through 6 to any SCSI device.
Table 1-2 summarizes the software requirements. Appendix B "Small Computer Systems Interface Information" describes additional information you might need regarding primary and additional SCSI buses, the regulated terminator, and SCSI bus length information.
Table 1-2 Software Requirements
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Operating System # of other SCSI # of other SCSI Multi- hard disks you devices you can Disk Pack can connect to connect to same SCSI same SCSI bus SCSI bus addresses ---------------------------------------------------------------------------------------------------------------------------------
Solaris 1.0 operating system None Up to 3** 0, 1, 2, 3*
and later Solaris 1.x
operating system releases
(SunOS 4.1.1 Rev. B,
SunOS 4.1.2, SunOS 4.1.3)
Solaris 2.1 operating system Up to 3** Up to 3** Any four
(SunOS 5.1) and later of the
operating system releases following:*
0, 1, 2, 3,
4, 5, 6
* SCSI addresses are preset to 0, 1, 2, and 3.
** In demanding I/O application environments, the Multi-Disk Pack should be
the only unit plugged into a SCSI bus in order to minimize SCSI bus contention
and maximize performance.
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Type the following at the operating system prompt:
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% uname -rs SunOS 4.1.3 --------------
Note - Do not turn the power off.
If you see the ok prompt instead, go to step 4.
The ok prompt is returned
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> n ok ------
The operating system will boot (if autoboot is enabled).
-----------
ok reset ok -----------
You should see the ok prompt.
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ok reset System reboots (if autoboot is enabled) Testing Press L1(Stop)-a keys simultaneously ok ------------------------------------------
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ok probe-scsi Target 3 Unit 0 Disk <Manufacturer information.......'> Target 4 Unit 0 Removable Tape <Manufacturer information.......'> Target 6 Unit 0 Removable Read Only Device <Manufacturer information......'> ----------------------------------------------------------
The probe-scsi command returns the SCSI targets (SCSI addresses) assigned by the system and their unit number.
The unit number (unit 0) refers to the SCSI logical device number. For SCSI peripherals with built-in SCSI controllers (known as "embedded SCSI"), this number will always be 0.
You need to know what SCSI addresses are set so you can assign the disk drives in the Multi-Disk Pack different SCSI addresses.
To determine the SCSI addresses of all SCSI buses (all SCSI host adapter ports either built into the system or SBus cards with a SCSI host adapter port):
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ok .version Release 2.6 Version ......... ---------------------------------
The .version command returns the release of the boot PROM in your system.
Refer to Code Example 1-1.
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ok probe-scsi-all /iommu@f,e0000000/sbus@f,e0001000/esp@3,200000 Target 6 Unit 0 Removable Read Only device <Manufacturer information.......'> /iommu@f,e0000000/sbus@f,e0001000/dma@1,81000/eps@1,80000 Target 2 Unit 0 Disk <Manufacturer information.......'> /iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000 Target 1 Unit 0 Disk <Manufacturer information.......'> Target 3 Unit 0 Disk <Manufacturer information.......'> ok Code Example 1-1 Code Example of the probe-scsi-all Command ----------------------------------------------------------------
The probe-scsi-all command returns the SCSI targets (SCSI addresses) assigned to each SCSI device for every SCSI host adapter port (SCSI bus) and their unit number. The unit number (unit 0) refers to the SCSI logical device number.
Each SCSI host adapter port returned by the probe-scsi-all command (refer to Code Example 1-1) is identified by a unique system hardware pathname. For example: /iommu@f,e0000000/sbus@f,e0001000/esp@3,200000
In the first listing, ending with esp@3,200000:
3 Refers to the physical SBus slot number in which the SBus card is installed. 200000 Refers to the device address offset. Target 6 Refers to the SCSI target (SCSI address) the CD-ROM drive (removable read only device) is set to.
In the second listing, ending with esp@1,80000:
1 Refers to the physical SBus slot number in which the SBus card is installed. 80000 Refers to the device address offset. Target 2 Refers to the SCSI target (SCSI address) the disk drive is set to.
In the last listing, ending with espdma@f,400000/esp@f,800000:
f Means that the SCSI host adapter port is built into the computer system. This may vary from system to system. 400000 Refers to the device address offset. Target 3 Refers to the SCSI target (SCSI address) an internal disk drive is set to. Target 1 Refers to the SCSI target (SCSI address) an internal disk drive is set to.
Look for a number 1 or greater following esp@.
Look for a number 0 or greater following esp@.
Each device on a SCSI bus must be assigned a different SCSI address.
You'll see a listing similar to Code Example 1-2 returned by the ls command.
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ok cd /sbus ok ls ffd496c0 espdma@f,400000 ffd4f240 dma@1,81000 ffd53f30 cgsix@2,0 ffd2690 lebuffer1,40000 ffd4f160 SUNW,DBRdcf,801000 ffd4err0 SUNW,bpp@f,4800000 ffd4cd60 ledma@f,400010 ffd566b0 esp@3,200000 ffd564f0 dma@3,200000 Code Example 1-2 Code Example listing the /sbus Directory -------------------------------
Look for a number 1 or greater following esp@.
Look for a number 0 or greater following esp@.
In the espdma@f,400000 example:
f Means that the SCSI host adapter port is built into the computer system. This may vary from system to system. 400000 Refers to the device address offset.
In the esp@3,200000 example:
3 Refers to the physical SBus slot number the SBus card containing the SCSI host adapter port (SBus SCSI Host Adapter card in this example) is installed in. 200000 Refers to the device address offset.
To do this, complete steps a and b.
Refer to Code Examples 1-3 and 1-4.
Code example 1-3 shows how to select an FSBE/S or SBE/S SBus card in SBus slot 1 and how to display the SCSI devices connected to the SBus card. The show-children command shows that one disk drive, set to SCSI target (address) 2, is connected to the SBus card.
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ok " /iommu/sbus/dma@1,81000/esp@1,80000" select-dev
ok show-children Target 2 Unit 0 Disk <Manufacturer information.......'> Code Example 1-3 SCSI Devices Connected to an FSBE/S or SBE/S SBus Card Installed in SBus Slot 1 -------------------------------------------------------
Note - Press the space bar after every quotation mark (").
Code example 1-4 shows how to select the SBus SCSI Host Adapter SBus card in SBus slot 3 and to display the SCSI devices connected to the SBus card. The show-children command shows that one CD-ROM drive (removable read only media) set to SCSI target (address) 6 is connected to the SBus card.
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ok " /iommu/sbus/esp@3,200000" select-dev
ok show-children Target 6 Unit 0 Removable Read Only device <Manufacturer information.......'> Code Example 1-4 SCSI Devices Connected to an SBus SCSI Host Adapter SBus Card Installed in SBus Slot 3 --------------------------------------------------
Note - Press the space bar after every quotation mark (").
Each device on a SCSI bus must be assigned a different SCSI address.
There are three jumper blocks on each of the 1.05-Gbyte disk drives. To determine if one of the jumper blocks has incorrectly set jumpers, refer to Section 5.1.3 "Settings Jumpers and Preparing the Disk Drive for Installation" in Chapter 5 to verify and set jumper settings. The troubleshooting flowcharts in Chapter 1 describe conditions where a SCSI address jumper or other jumper settings may be incorrectly set.
