Verifying The Built-In Scsi Controller; Table 4-3 Troubleshooting Disk Drive Errors - Sun Microsystems SPARCstation 4 Service Manual

Note – This table does not apply to the SPARC Xterminal 1 system.
TABLE 4-3
Symptom
Read, write, or parity error
reported by the operating system
or applications.
Drive fails to boot or does not
respond to commands.
Slow disk drive response.
4.3.1

Verifying the Built-In SCSI Controller

To check whether the built-in SCSI controller is defective, test the drive response to
the probe-scsi command. To test additional SCSI host adapters added to the
system, use the probe-scsi-all command. Refer to Section D.1.6 "module-info.
Note – This test does not apply to the SPARC Xterminal 1 system.
At the ok prompt, type probe-scsi
See the following example.
ok probe-scsi
Target 3
Unit 0
4-6 SPARCstation 4/Xterminal 1 Service Manual • January 1995
Troubleshooting Disk Drive Errors
Disk SEAGATE ST3610N
Corrective Action
Replace the disk drive indicated by the failure
message. Solaris 1.x operating systems identify the
internal disk drive (SCSI target ID 3) as sd0. With
Solaris 2.x operating systems, the drive is identified
as c0t3d0.
SCSI controller may be defective. See Section 4.3.1
"Verifying the Built-In SCSI Controller." Verify that
each SCSI device is assigned a unique SCSI target
address. See Appendix C for important additional
information.
If many SCSI devices are connected to the same SCSI
bus and if some of these devices, such as the 1.05-
Gbyte disk drive, are "fast SCSI" devices, you may
want to install an FSBE/S SCSI host adapter card to
the "fast SCSI" devices and put these "fast SCSI"
devices on a separate SCSI bus to speed up disk
drive response.
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