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4.1 Mode Parameters
C141-E167 4 - 21
b. Number of retries during VERIFY
This parameter specifies the number of times reading of the disk media should be retried when a
"Data Check" type error is detected in a read operation. the number of retries specified by this
parameter is the maximum number of times reading of each individual data area in each logical
data block is retried. The IDD retries reading the data area in each data block the specified
number of times. When zero is specified in this field, retrying to read data from the disk is
prohibited.
When X '06' is specified as the page length on Page 1, the IDD applies the value specified in the
Number of retries during READ field on Page 1 to this field also.
c. Correctable bit length
This parameter indicates the burst error length (bit length) that can be applied for data
corrections according to the ECC. This parameter cannot be changed by the INIT. However, the
IDD disregards the value specified in this parameter and operations according to the "Default"
value.
d. Recovery time limit
This parameter specifies the maximum time the TARG can used for error recovery processing,
as a 1ms constant. The value specified in this parameter is the maximum permissible error
recovery processing time for an individual command. When both this parameter and the
"Number of retries during VERIFY" parameter are specified, priority must be given to
whichever parameter specifies the shortest time in its application.
The reported value in this field is a copy of the Recovery time limit in Page 1. The IDD
disregards the value specified in this field.
4.1.6 Caching parameters (page code = 8)
The page descriptor format of this MODE SELECT parameter is shown in Figure 4.6