SCSI Description

￿￿￿￿￿￿￿￿8GTKH[The￿'TTQTVerify￿4GEQXGT[Error Recovery￿2CIG￿￿￿￿PageJ￿controls the drive’s response to error conditions that arise during the VERIFY command and during the verify operation of the WRITE AND VERIFY command. The Verify Error Recovery Page is not supported in the SCSI-1/CCS Operating Mode. The data format and field descriptions are described in Table 5-68and Table 5-69respectively.

Verify Error Recovery Page-(Page 7)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

PS

Rsvd

 

 

 

 

 

Page Code (07h)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

Page Length (0Ah)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

Reserved

 

 

EER

 

PER

DTE

DCR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

Verify Retry Count

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

Verify Correction Span

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5 – 9

 

 

 

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10 – 11

 

 

 

 

 

 

Verify Recovery Time Limit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fully supported and temporary fields are underlined. Informational fields are

 

 

 

 

 

 

 

 

not underlined. The PS bit is underlined, meaning it will be set on a MODE

 

 

 

 

 

 

 

 

SENSE command, since the page is savable

 

 

 

 

 

$[VG

$KV

￿

Verify￿Error Recovery￿

Page￿-Field Descriptions￿

(Page￿￿￿7)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Count

 

 

 

Table5-69

 

 

This bit is only used with the MODE SENSE command. A

 

 

 

 

 

 

 

 

ParametersTable5-Savable.68

 

(KGNFPS

 

&GHCWNV8CNWG0 ￿

returned value of 1 indicates that&GUETKRVKQPthe target is capable of saving the page in a

 

 

 

 

 

 

 

 

non-volatile, vendor-specific location. The bit is reserved with the MODE SE-

 

 

 

 

 

 

 

 

LECT command.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EER

 

 

0

 

 

Enable Early Recovery.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Post Error Recovery. When the value is 1, the drive returns CHECK CONDITION

 

 

 

 

 

 

 

 

status for recovered errors, sets the sense key to RECOVERED ERROR, and

 

 

 

 

 

 

 

 

posts the appropriate additional sense code.

 

 

 

 

PER

 

 

0

 

 

When set to the default value0QV￿UWRRQTVGFof 0, it causes￿D[￿VJGthe￿FTKXGdrive￿to return GOOD status in

 

 

 

 

 

 

 

 

cases where error recovery is invoked and is successful. The only recoverable

 

 

 

 

 

 

 

 

error that can occur during a VERIFY operation is a failed read that succeeds af-

 

 

 

 

 

 

 

 

ter retries.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DTE

 

 

0

 

 

Disable Transfer on Error.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note:0

Disable Correction. When the value is 1, it disables ECC correction (but not re-

 

DCR

 

 

tries) on the READ portion of0QVa￿VERIFYUWRRQTVGFoperation￿D[￿VJG￿.FTKXGWhen￿set to the default value

 

 

 

 

 

 

 

 

of 0, the ECC correction is always applied as a means of recovering erred data.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Verify

 

 

 

 

 

The Verify Retry Count specifies the number of retries that are attempted per

 

Retry

 

 

4

 

 

 

 

 

 

 

sector on a failed READ portion of a VERIFY operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Verify Correction Span specifies the maximum number of bits in a sector

 

Verify

 

 

 

 

 

that the drive is allowed to correct. A value less than the default value can cause

Correction

 

170

 

an otherwise correctable error to be reported as uncorrectable. If the initiator

 

Span

 

 

 

 

 

specifies a value larger than 80, the drive rounds down to 80 without reporting

 

 

 

 

 

 

 

 

the change. A value of 0 causes the drive to use its default value

 

 

 

 

 

 

 

 

 

 

 

Verify

 

 

 

 

 

The Verify Recovery Time Limit specifies (in milliseconds) the maximum time

 

 

 

 

 

 

that a retry is attempted on a failed sector during the read portion of a verify

 

Recovery

 

 

0

 

 

 

 

 

 

 

operation. The default value of

indicates that there is no time limit. The mini-

Time Limit

 

 

 

 

 

 

 

 

 

 

mum permissible is 100 milliseconds.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5-52 Maxtor Atlas 10K III

Page 116
Image 116
Maxtor 10K III manual Verify Error Recovery Page-Page, Sense command, since the page is savable, Eer Per Dte Dcr