Sense Data and Error Recovery Methods

Table 6.6 Error recovery processing procedures (3/4)

Recovery

 

Recovery Processing Procedure

Method

 

 

 

 

 

 

13

1)

Execute a HARD RESET sequence.

 

2)

After waiting 2 seconds or longer, reissue the original command (Retry), and if

 

 

the spindle motor's start mode is set on "Start by Command," issue the START

 

 

instruction by the NOTIFY Primitive (ENABLE SPINUP) before retrying.

 

3)

If the retry procedure 2) does not terminate normally, perform recovery

 

 

method 1.

 

 

 

14

1)

The parameter is initialized at the "Save" value (if the "Save" value does not

 

 

exist, the "Default" value), so when it is necessary to set the inherent

 

 

parameter, issued the MODE SELECT command.

 

2)

Reissue the original command (Retry).

 

 

 

16

1)

Issue the LOG SENSE command and read the "Current" values in the LOG

 

 

SELECT parameters.

 

2)

If the parameters' values are appropriate, reissue the original command.

 

Note This error could also be caused by a UNIT ATTENTION condition being

 

 

generated, caused by a programming error of another INIT, so when the

 

 

value in the parameter read in ( is illegal, recovery method 2 should be

 

 

performed, or the operations of the other INITs should be confirmed.)

 

 

17

If the PRIORITY RESERVE command issued by another INIT is proper in the

 

system, perform the necessary recovery processing in the system. If not, perform

 

recovery method 2.

 

 

 

18

1)

Issue the MODE SENSE or MODE SENSE EXTENDED command and

 

 

confirm the values of the disk media data format related parameters (Block

 

 

descriptor, Page 3: Format parameters, Page 4: Drive parameters).

 

2)

If the parameter values are correct, issue the FORMAT UNIT command and

 

 

initialize the entire disk media surface. (Note)

 

3)

If the parameter values are not correct, issue a MODE SELECT or MODE

 

 

SELECT EXTENDED command and reset the necessary parameters, then

 

 

reinitialize the entire disk media surface by the FORMAT UNIT command.

 

 

(Note)

 

Note In a system where multiple INITs are connected together, an error may have

 

 

been reported due to a MODE SELECT or MODE SELECT EXTENDED

 

 

command, or a FORMAT UNIT command issued by another INIT, so before

 

 

executing this recovery method, it is necessary to confirm the operations of

 

 

the other INITs.

 

 

 

380

C141-C013

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Fujitsu MBA3073RC, MBC2036RC, MBC2073RC, MBA3300RC, MBA3147RC specifications Error recovery processing procedures 3/4