Teledyne Sierra M6-2 User Manual page 228

Teledyne LeCroy
In the Decoding Assignments window, the hashed address for all SCSI devices detected in
the trace will appear in the Hash Destination SAS Address list. The supported
specifications appear in the window on the right labeled SCSI Specs. The Assigned SCSI
Specs scroll list displays the current assignment for each hashed address detected in the
trace. This scroll list allows users to manually change the decoding assignment post
capture. This may be necessary if the trace contains SAS traffic that is not SCSI Block
Command 3 (SBC3) based, such as SAS tape or multimedia devices (rare).
If for any reason, the Assigned SCSI Specs list is displaying an incorrect spec for an
individual device, select the Hash Address within this list and click the Remove button. To
assign a different specification to the same device, reselect the device hashed address in
the upper Hash Destination SAS Address window. Then select the correct specification in
the SCSI Spec(s) window. Click the Add to Assigned List button to assign the individual
decode. It's only possible to assign one SCSI Spec to a given hash address. Decoding
changes should appear immediately but It's necessary to save the trace to keep any
decoding changes.
In general SATA devices do not require manual decode assignment. Most SATA‐based
HDD/SSD devices use the ATA/ATAPI command set and are automatically decoded using
the MMC6‐SPC4 specification. Some removable SATA multimedia devices utilize the
PACKET feature set (also known as ATAPI devices). These ATAPI based devices use a subset
of the SCSI command set by default will be decoded using the Multi‐Media Commands ‐ 6
(MMC6‐SPC4). Some SATA multimedia devices may alternately use the SCSI Streaming
Command set (SSC2‐SPC4). For these devices it may be necessary to manually assign the
decoding to the SSC2‐SPC4 spec. See
226
Figure 3.7 on page 227.
Sierra M6‐2 SAS/SATA Protocol Analyzer User Manual
Analysis