IBM IC35L036UWDY10 Hard Drive Specifications - Page 207
SCSI Bus Related Error Handling Protocol, 4.3 MESSAGE IN Phase Parity Error MESSAGE PARITY ERROR
![]() |
UPC - 000004119524
View all IBM IC35L036UWDY10 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 207 highlights
10.4 SCSI Bus Related Error Handling Protocol This protocol is used to handle errors that threaten the integrity of a connection between the Target and an initiator. 10.4.1 Unexpected BUS FREE Phase Error Condition There are several error conditions that will cause the drive to immediately change to the BUS FREE phase regardless of the state of the ATN signal. The drive will not attempt to reconnect to the initiator to complete the operation that was in progress when the error condition was detected. The initiator should interpret this as a catastrophic error condition. If the LUN was identified by the drive prior to the error condition, the drive will abort the active command for this initiator/LUN and generate sense data for this initiator/LUN to describe the cause of the catastrophic error. The initiator may retrieve this sense data by issuing a REQUEST SENSE command to this LUN. Note however, that the REQUEST SENSE command may fail if the catastrophic error condition persists. If the LUN was not identified by the drive prior to the error condition, the drive will not affect the sense data or the operation of any currently executing command for this initiator or any other initiator. 10.4.2 MESSAGE OUT Phase Parity Error The drive will optionally retry the message phase and, if it still fails, abort the current command with CHECK CONDITION status and sense data of ABORTED COMMAND / SCSI PARITY ERROR. If the parity error occurs before the ITL nexus is established (on the initial IDENTIFY message), the drive is to go to the bus free state. 10.4.3 MESSAGE IN Phase Parity Error (MESSAGE PARITY ERROR) The drive may retry the message phase and, if it still fails, abort the current command and go to bus free, setting sense data of ABORTED COMMAND / SCSI PARITY ERROR. 10.4.4 COMMAND Phase Parity Error The drive may retry the command phase after sending a restore pointers message. If it still fails, it will abort the current command with CHECK CONDITION status and sense data of ABORTED COMMAND / SCSI PARITY ERROR. 10.4.5 DATA OUT Phase Parity Error If the drive detects a parity error during DATA OUT phase, the drive will abort the current command with CHECK CONDITION status and sense data of ABORTED COMMAND / SCSI PARITY ERROR. Ultrastar 146Z10 hard disk drive specifications 191
![](/manual_guide/products/ibm-ic35l036uwdy10-hard-drive-specifications-4359dfe/207.png)