Fujitsu MBC2073RC Manual Do Utilizador

C141-C013 

407 

During a self-test, the INIT can obtain the progress of the self-test by referencing 
the "sense key specific information" field (bytes 16-17), which is returned in 
response to the REQUEST SENSE command.  When the self-test has encountered 
no error, the HDD terminates the command with CHECK CONDITION status 
(NOT READY [=2]/LOGICAL UNIT NOT READY, SELF-TEST IN 
PROGRESS [04-09]). 

If the current test segment encounters an unrecoverable error during a self-test, the 
HDD updates the self-test result log page and terminates the self-test in progress.  
(If a recoverable error is detected during a self-test, the self-test result log page is 
not updated and the self-test in progress continues.) 

The INIT can reference the self-test result log page to obtain information on the 
previous 20 self-tests that have been completed. 

A short self-test is divided into several test segments, each of which is conducted 
as a simple test. 

An extended self-test is conducted for all test segments that are defined on the 
HDD.  Each segment test is always initiated, beginning with sub-segment number 
1. 

The test execution time is reported using bytes 10-11 on the control mode page 
(PageCode = 0A) described in Section 5.1.7. 

The test items included in each test segment are explained below. 

a.  Buffer RAM test 

This test segment performs write/read/compare checking of the data buffer 
area. 

Increment, decrement, and single patterns are used as the data patterns.  The 
single pattern is a data pattern consisting of "00h."  For each sub-segment, 
these three types of patterns are used. 

If a compare error is detected during the data compare check phase, Hardware 
Error [=4]/Buffer RAM Compare Error/Bus Error [40-81] (Reason code = 
'00h' for the single pattern, '01h' for the increment pattern, or '02h' for the 
decrement pattern) is reported on the self-test result log page.