Sun Microsystems Netra X4200 M2, Service Manual

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Appendix E Serial Attached SCSI BIOS Configuration Utility 175
CHS Mapping Defines how the Cylinder Head Sector values are mapped onto a
disk without pre-existing partition information. CHS Mapping
allows two settings:
•
SCSI Plug and Play Mapping (default) automatically determines
the most efficient and compatible mapping.
• Alternate CHS Mapping utilizes an alternate, possibly less
efficient, mapping that may be required if a device is moved
between adapters from different vendors.
Note: Neither of these options has any effect after a disk has been
partitioned using the FDISK command. To change the CHS Mapping
on a partitioned disk, use the FDISK command to delete all
partitions. Then reboot the system to clear memory. Otherwise, the
old partitioning data will be reused.
Link Error Settings • Invalid DWORDs : The number of invalid dwords that have been
received, outside of PHY reset sequences, since the last PHY Link
Error Reset.
• Loss of DWORD Sync : The number of times, since the last PHY
Link Error Reset, that DWORD synchronization was lost and the
link reset sequence occurred.
• Running Disparity Errors : The number of DWORDS with
running disparity errors that have been received, outside of PHY
reset sequences, since the last PHY Link Error Reset.
• PHY Reset Errors : The number of times the PHY reset sequence
has failed, since the last PHY Link Error Reset.
Threshold Count Link error count threshold values. When a Link Error Count exceeds
a Threshold Count within the Threshold Time (secs) the Fusion-MPT
FW may reduce the link rate. Press Enter on any of these fields to
modify the value.
Threshold Time
(secs) Time, in seconds, over which to apply the Threshold Count. When a
Link Error Count exceeds a Threshold Count within the Threshold
Time (secs) the Fusion-MPT FW may reduce the link rate. Press
Enter on any of these fields to modify the value.
Advanced Device
Properties Press Enter to view and modify Advanced Device Properties (see
“Advanced Device Properties Screen” on page 176 ).
PHY Properties Press Enter to view and modify PHY properties (see “PHY
Properties Screen” on page 179 ).
Restore Defaults Press Enter to restore the default values for all items on this screen.
TABLE E-8
Advanced Adapter Properties Screen Field Descriptions (Continued)
Field Description