Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
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Table 281 Short and Extended Self-Test Description
Segment
Number
Short Self-Test
Extended
Self-Test
Test Description
1h Drive Ready Test
Internal check to insure drive is “ready”, similar to a
Test Unit Ready command.
2h
Drive Diagnostics
This test is comprised of the Default Self Test as
defined in Section 20.12.2.1 "Default Self-test"
3h SMART
Perform SMART testing and check results to ensure
that SMART threshold criteria are not exceeded
4h
Low Level Format check
Check to insure that the media is currently not in the
MEDIA FORMAT CORRUPTED state.
5h Physical Head Check
Write/Read test on each head in a predefined location
in the drive's Reserved Area of the disk.
6h
Random Verify
Perform 4000 random verify operations and insure no
uncorrectable errors.
7h - Verify First 300MB
- Verify Last 100 MB
Verify all LBA’s
Sequential verify operation. Ensure that no
uncorrectable errors occur within the verify range.
8h
Recheck SMART
Same as segment 4h.
20.12.2.4
Background Medium Scan
For a related function, see Mode Page 1C (Informational Exceptions Control).