Fujitsu MBA3147RC Manuel D’Utilisation

 

This section describes the log page structure and log pages that can be used for all 
SAS devices. 

Pages that are specific to each device format are described in the command 
standard that applies to the pertinent device format.  The LOG SENSE command 
reports the log page that is specified in the page code field of the command 
descriptor block. 

Table 5.21 shows the log parameter format on each parameter page. 

 Bit 
Byte 

7 6 5 4 3 2 1 0 

0 

Parameter code (MSB) 

1 

Parameter code (LSB) 

2 DU DS 

TSD 

ETC  TMC  LBIN 

LP 

3 Parameter 

length 

4  

 
 

Parameter value 

n 

 

 

 

 

 

 

 

 

~ 

~

 

~ 

~

 

 

a. Parameter 

code 

This field indicates the type of log parameter that is transferred to the log page. 

b.  DU (Disable Update) 

"1": The HDD will not update the value of a log parameter unless the LOG 

SELECT command specifies a new parameter value for the log parameter. 

"0": The HDD will update the values of log parameters to ensure that the log 

parameters reflect all events. 

c.  DS (Disable Save) 

"1": When the "SP" bit is "1," the log parameter value will not be saved by the 

LOG SELECT or LOG SENSE command. 

"0": When the "SP" bit is "1," the current parameter value will be saved by the 

LOG SELECT or LOG SENSE command. 

d.  TSD (Target Save Disable) 

C141-C013 

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