Hitachi C4K60 Specifications - Page 111

a Raw Read Error Rate Measurement

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7.5.48.2. Captive mode When executing a self-test in captive mode, the device sets BSY to one and executes the self-test routine after receipt of the command. At the end of the routine the device places the results of this routine in the Self-test execution status byte and executes command completion. If an error occurs while a device is performing the routine the device discontinues its testing, place the results of this routine in the Self-test execution status byte, and complete the command. 7.5.48.3. SMART off-line routine This routine only is performed in the off-line mode. The following tests are performed: 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. 7.5.48.4. SMART Short self-test routine Depending on the value in the LBA Low (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. 7.5.48.5. SMART Extended self-test routine Depending on the value in the LBA Low (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). 7.5.48.6. SMART Selective self-test routine Depending on the value in the LBA Low (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. K6610170 Rev.2 Dec 22, 2004 - 111 -

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K6610170
Rev.2
Dec 22, 2004
- 111 -
7.5.48.2. Captive mode
When executing a self-test in captive mode, the device sets BSY to one and executes the self-test routine
after receipt of the command. At the end of the routine the device places the results of this routine in the
Self-test execution status byte and executes command completion. If an error occurs while a device is
performing the routine the device discontinues its testing, place the results of this routine in the Self-test
execution status byte, and complete the command.
7.5.48.3. SMART off-line routine
This routine only is performed in the off-line mode. The following tests are performed:
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.
7.5.48.4. SMART Short self-test routine
Depending on the value in the LBA Low (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.
7.5.48.5. SMART Extended self-test routine
Depending on the value in the LBA Low (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).
7.5.48.6. SMART Selective self-test routine
Depending on the value in the LBA Low (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.