Seagate ST1200MM0017 ユーザーズマニュアル

S

EAGATE 

E

NTERPRISE 

P

ERFORMANCE 

10K HDD 

V

7  P

RODUCT 

M

ANUAL

, R

EV

. C

  32

  

* For read retry count, every tick ~ 5% of total error recovery. Valid range setting is 1-20.

                     e.g. 1 ~ 5%

                            5 ~ 25%

                           20 ~ 100%

Setting these retry counts to a value below the default setting could result in degradation of the unrecovered error rate. For 
example, suppose the read/write recovery page has the RC bit = 0 and if the read retry count is set to 5, this means ~ 25% of 
error recovery will be executed which consumes 621.62 ms (please refer to the table above). If the limit is reached and a 
LBA has not yet been recovered (i.e. requires retries beyond 621.62 ms), the command will end with Check Condition status 
report and unrecoverable read error will be reported.

Information on the reporting of operational errors or faults across the interface is given in the SAS Interface Manual. The 
SSP Response returns information to the host about numerous kinds of errors or faults. The Receive Diagnostic Results 
reports the results of diagnostic operations performed by the drive.

Status returned by the drive to the initiator is described in the SAS Interface Manual. Status reporting plays a role in systems 
error management and its use in that respect is described in sections where the various commands are discussed.

0

35.94

1

124.32

1

53.91

5

621.62

2

79.89

10

1243.23

3

97.86

15

1864.85

4

175.85

20 (default)

2486.47

5 (default)

421.79