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The IDD disregards this bit and operates according to the default value (=0).
h. DCR (disable correction)
"1" : Even when a correctable data check has been detected, data correction according to
the ECC is prohibited. However, On-the-fly correction processing is not prohibited.
"0" : When a correctable data check has been detected, data correction according to the
ECC is applied.
The IDD disregards this bit and operates according to the default value (=0).
i. Number of retries during read
This parameter specifies the number of retries that should be executed for "Data Check"
type errors detected in read operations on the disk media. The number of retries specified
in this parameter is the maximum number of times reading is retried for each individual
portion of data in each logical data block. If the IDD cannot perform correction of the data
On-the-fly for each portion of data in the data block, it retries the reading of those portions.
The reread retry is executed the number of times specified by the drive parameter
internally by the IDD before this retry is executed, so actually the retry is executed the
number specified here plus the number of internal retries.
The value specified in this parameter is applicable to the READ/READ EXTENDED
commands and the read test in the SEND DIAGNOSTIC command.
When the page length in Page 1 is specified as X '06,' the value specified in this field is
copied to the "Number of retries during WRITE" on this page and "Number of retries
during VERIFY" on Page 7.
j. Correctable bit length
This parameter indicates the burst error length (bit length) which it is possible to apply
data correction according to the ECC to. It is impossible to change this parameter from the
INIT. The IDD disregards the value specified in this parameter and operates according to
the "Default" value. The value is "59" (=89 bit) (MAA3182FC) and "99" (=153 bit)
(MAF3364FC, MAG3091FC, MAG3182FC).
k. Number of retries during write
This field specifies the maximum number of times writing of data to the disk media is
retried in the case that there has been an interruption in a write operation such as a shock.
The number of retries specified in this field is applied to each logical block unit. When
zero is specified in this field, retrying of writing to the disk is prohibited.
The value specified in this field is applicable to the WRITE command, WRITE
EXTENDED command, write operation in the WRITE AND VERIFY command and write
test in the SEND DIAGNOSTIC command. When the page length in Page 1 is specified
as X '06,' the value specified in this field is not transferred from the INIT, but in this case,
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C141-E054-02EN
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