Hitachi DK23BA-20 Owners Manual - Page 64

a Raw Read Error Rate Measurement

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(3) SMART off-line routine This routine only is performed in the off-line mode. The following tests are performed for the SMART off-line routine. a) Raw Read Error Rate Measurement Partial read scanning and Raw Read Error Rate measurement is performed. b) Automatic sector reallocation in off-line read scanning for entire LBA. (4) SMART Short self-test routine Depending on the value in the Sector Number register, this self-test routine is performed in either the captive or the off-line or mode. This self-test routine should take on the order of two minutes to complete. The following tests are performed for the SMART short self-test routine: a) Read test - Partial read scanning and Raw Read Error Rate measurement is performed. b) Write test - A part of the factory data area is used. Write and Read test is performed for each head. c) Servo test - Position Error Signal is checked for certain rotations in order to analyze RRO and settling accuracy. - Load and Unload function is tested. - Servo data on the outer track of each zone for each head is verified. d) Partial read scan test for the first 500MB and the last 300MB 0f the device. e) Random read test - Average seek time and throughput performance are measured in this test. f) RAM test - Diagnoses buffer RAM and SDRAM. g) SMART parameter verify - Detects a threshold exceed condition. h) SMART error log check - Read scanning for SMART error log sector and Verify validity. (5) SMART Extended self-test routine Depending on the value in the Sector Number register, this self-test routine is performed in either the captive or the off-line mode. This self-test routine takes on the order of tens of minutes to complete. SMART Extended Self test routine performs read scanning test for entire LBA in addition to the above SMART short self-test routine (except the partial read scan test). (6) SMART Selective self-test routine Depending on the value in the Sector Number register, this self-test routine is performed in either the captive mode or the off-line mode. In addition to the above SMART short self-test routine (except the partial read scan test), SMART selective self-test routine performs read scanning test for up to five areas of the media specified by user. To do this, a user shall set the test spans desired in Selective self-test log (Log sector address # 09h) using WRITE SMART LOG command. After the scan of the selected areas, the user may wish to have the rest of media read scanned as an offline scan. In this case, the user shall set the flag of Selective self-test log to enable off-line scan. K6610007 Rev.5 02.14.'03 - 64 -

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K6610007
Rev.5
02.14.’03
- 64 -
(3) SMART off-line routine
This routine only is performed in the off-line mode. The following tests are performed for the SMART off-line
routine.
a) Raw Read Error Rate Measurement
Partial read scanning and Raw Read Error Rate measurement is performed.
b) Automatic sector reallocation in off-line read scanning for entire LBA.
(4) SMART Short self-test routine
Depending on the value in the Sector Number register, this self-test routine is performed in either the
captive or the off-line or mode. This self-test routine should take on the order of two minutes to complete.
The following tests are performed for the SMART short self-test routine:
a) Read test - Partial read scanning and Raw Read Error Rate measurement is performed.
b) Write test - A part of the factory data area is used. Write and Read test is performed for each head.
c) Servo test
- Position Error Signal is checked for certain rotations in order to analyze RRO and settling accuracy.
- Load and Unload function is tested.
- Servo data on the outer track of each zone for each head is verified.
d) Partial read scan test
for the first 500MB and the last 300MB 0f the device.
e) Random read test - Average seek time and throughput performance are measured in this test.
f) RAM test - Diagnoses buffer RAM and SDRAM.
g) SMART parameter verify -
Detects a threshold exceed condition.
h) SMART error log check - Read scanning for SMART error log sector and Verify validity.
(5) SMART Extended self-test routine
Depending on the value in the Sector Number register, this self-test routine is performed in either the
captive or the off-line mode. This self-test routine takes on the order of tens of minutes to complete.
SMART Extended Self test routine performs read scanning test for entire LBA in addition to the above
SMART short self-test routine (except the partial read scan test).
(6) SMART Selective self-test routine
Depending on the value in the Sector Number register, this self-test routine is performed in either the captive
mode or the off-line mode. In addition to the above SMART short self-test routine (except the partial read
scan test), SMART selective self-test routine
performs read scanning test for up to five areas of the media
specified by user. To do this, a user shall set the test spans desired in Selective self-test log (Log sector
address # 09h) using WRITE SMART LOG command.
After the scan of the selected areas, the user may wish to have the rest of media read scanned as an off-
line scan. In this case, the user shall set the flag of Selective self-test log to enable off-line scan.