Cause
The most common cause of this problem is unapproved hardware. Some SCSI
devices for the PC market do not meet the high I/O speed requirements for the
UNIX market. Other possible causes of this problem are improper cabling or
termination, and power fluctuations. Data corruption is possible, but unlikely to
occur, because this parity error prevents data transfer.
Action
Check that all SCSI devices on the bus are Sun-approved hardware. Then verify that
all cables measure no longer than six meters total and that all SCSI connections are
properly terminated. If power fluctuations are occurring, invest in an uninterruptible
power supply.
The most common cause of this problem is unapproved hardware. Some SCSI
devices for the PC market do not meet the high I/O speed requirements for the
UNIX market. Other possible causes of this problem are improper cabling or
termination, and power fluctuations. Data corruption is possible, but unlikely to
occur, because this parity error prevents data transfer.
Action
Check that all SCSI devices on the bus are Sun-approved hardware. Then verify that
all cables measure no longer than six meters total and that all SCSI connections are
properly terminated. If power fluctuations are occurring, invest in an uninterruptible
power supply.
SCSI transport failed: reason ’reset’
Cause
This message indicates that the system sent data over the SCSI bus, but the data
never reached its destination because of a SCSI bus reset. The most common cause of
this condition is conflicting SCSI targets. Data corruption is possible, but unlikely to
occur, because this failure prevents data transfer.
Action
Verify that all cables measure no longer than six meters total and that all SCSI
connections are properly terminated. If power surges are a problem, acquire a surge
suppressor or an uninterruptible power supply.
A machine’s internal disk drive is usually SCSI target 3. Make sure that external and
secondary disk drives are targeted to 1, 2, or 0, and do not conflict with each other.
Also, make sure that tape drives are targeted to 4 or 5, and CD drives to 6, avoiding
any conflict with each other or with disk drives. If the targeting of the internal disk
drive is in question, power off the machine, remove all external drives, turn on the
power, and from the PROM monitor run the probe-scsi-all or probe-scsi
command.
If SCSI device targeting is acceptable, memory configuration could be the problem.
Ensure that high-capacity memory chips (such as 4–Mbyte SIMMs) are in lower
banks, while lower-capacity memory chips (such as 1–Mbyte SIMMs) are in the
upper banks.
SPARC systems do not always support third-party CD-ROM drives, and can
generate a similar unknown vendor error message. Check with the CD-ROM
vendor for specific configuration requirements.
Some third-party disk drives have a read-ahead cache that interferes with the Solaris
device drivers. Make sure that any existing read-ahead cache facility is turned off.
This message indicates that the system sent data over the SCSI bus, but the data
never reached its destination because of a SCSI bus reset. The most common cause of
this condition is conflicting SCSI targets. Data corruption is possible, but unlikely to
occur, because this failure prevents data transfer.
Action
Verify that all cables measure no longer than six meters total and that all SCSI
connections are properly terminated. If power surges are a problem, acquire a surge
suppressor or an uninterruptible power supply.
A machine’s internal disk drive is usually SCSI target 3. Make sure that external and
secondary disk drives are targeted to 1, 2, or 0, and do not conflict with each other.
Also, make sure that tape drives are targeted to 4 or 5, and CD drives to 6, avoiding
any conflict with each other or with disk drives. If the targeting of the internal disk
drive is in question, power off the machine, remove all external drives, turn on the
power, and from the PROM monitor run the probe-scsi-all or probe-scsi
command.
If SCSI device targeting is acceptable, memory configuration could be the problem.
Ensure that high-capacity memory chips (such as 4–Mbyte SIMMs) are in lower
banks, while lower-capacity memory chips (such as 1–Mbyte SIMMs) are in the
upper banks.
SPARC systems do not always support third-party CD-ROM drives, and can
generate a similar unknown vendor error message. Check with the CD-ROM
vendor for specific configuration requirements.
Some third-party disk drives have a read-ahead cache that interferes with the Solaris
device drivers. Make sure that any existing read-ahead cache facility is turned off.
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