Hitachi DK23DA-30F - 30 GB Hard Drive Specifications page 64

(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.
(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 one minute 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
User data area is not utilized, 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.
d) Partial read scan test
Scans the first 300MB and the last 100MB 0f the device.
e) Seek performance test
Measures average seek time.
f) Throughput performance test
Measures throughput in the partial read scan test.
g) RAM test
Diagnoses buffer RAM and SDRAM.
h) SMART parameter verify
Detects a threshold exceed condition.
K6602705
Rev.3
08.20.01
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