Seagate Medalist 2160N (ST52160N), Руководство по эксплуатации продукта

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Parameter Code 03
H
— Total Errors Corrected. This counter counts the
total of all correctable errors encountered. It is the sum of the counters
specified by parameter codes 01
h
and 02
h
. There is no double counting
of data errors among these two counters and all correctable data errors
are counted in one of these counters.
Parameter Code 04
H
— Total Times Correction Algorithm Processed.
This parameter code specifies the counter that counts the total number
of retries, or times the retry algorithm is invoked. If after five attempts a
counter 02
H
type error is recovered, then five is added to this counter. If
three retries are required to get a stable ECC syndrome before a counter
01
H
type error is corrected, then three retries are also counted. The
number of retries applied to unsuccessfully recover an error (counter 06
H
type error) are also counted by this counter.
Parameter Code 05
H
—Total Bytes Processed. This parameter code
specifies the counter that counts the total number of bytes either suc-
cessfully or unsuccessfully read, written or verified (depending on the log
page) from the disc drive. If a transfer terminates early because of an
unrecoverable error, only the logical blocks up to and including the one
with the unrecoverable error are counted. Data bytes transferred to the
initiator during a Mode Select, Mode Sense, Inquiry and Write Data
Buffer, do not count; only user-data bytes are counted by this counter.
Parameter Code 06
H
—Total Uncorrected Errors. This parameter
code specifies the counter that contains the total number of blocks for
which an unrecoverable data error has occurred.
Bytes 2–3 The page length field specifies the length of the attached
log parameters in bytes. If the application client sends a
page length that is inadequate and truncates any parame-
ter, the device server terminates the command and issues
a CHECK CONDITION status. The sense key is set to
ILLEGAL REQUEST and the additional sense code is set
to INVALID FIELD IN PARAMETER LIST.
Bytes 4–
n
Log parameters are the special data structure for each page
code used in the log page. Log parameters may be data
counters that record a count of a particular event (or
events), the circumstances under which certain operations
were performed, or list parameters (strings) that contain a
description of a particular event. The log parameter format
is shown and described on the following page.
Medalist Pro 2160N/2160WC Product Manual, Rev. A 79