Lenovo 6290, Руководство по техническому обслуживанию аппаратной части

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Verify Tests: - checks the integrity of the data present on the media.
– Linear Verify
– Random Verify
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Surface Scan Tests: - checks the drive media for defects.
– Surface Scan (Linear)
– Surface Scan (Aggressive) - this is disabled for normal customer use.
– Surface Scan (Random)
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SMART: - checks the SMART functionality for drives that support SMART.
– Start SMART Self-Test
– Get SMART test results
Other Test Features:
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Write-Splice Repair - detects and corrects Error Correction Code errors during
Verify tests.
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Auto Spin Down - a gradual spin down of the drive platters to avoid damaging
the media.
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Manufacturer Log - an in-depth manufacturer supported log of errors on the
drive.
Multitasking:
To allow simultaneous testing of multiple hard drives whenever possible the FDAT
module is written as a set of multitasking functions. Each drive under test can run
the same test or run a different test at the same time. Each subtest is written to
handle a single test pass and all test variables are kept track of in a structure
unique for each drive . However when testing IDE drives FDAT will not perform
simultaneous testing of IDE drives that are attached to the same IDE cable. For
example if FDAT is testing four IDE drives on a PC it will perform simultaneous
testing on drives 1 and 3 first (master drives) then perform tests on 2 and 4 (slave
drives). FDAT will also perform simultaneous testing on a master and slave that
are on separate IDE cables but will not perform simultaneous tests on a master and
slave on the same IDE cable. This generally increases the amount of time needed to
test multiple IDE drives. Another limitation of FDAT’S multitasking capability is
the use of Ultra DMA (UDMA). Only one drive at a time can access the UDMA
channel and the UDMA channel buffer must be kept high in order to maintain a
speed advantage over other data transfer modes. In order to use the UDMA
channel during testing users must disable the multitasking feature.
Destructive vs non-destructive testing:
Most of the tests found in FDAT are non-destructive. This means that PCDR will
preserve any data that is present on the tested media prior to beginning any
destructive operations (i.e. write operations). However users can run certain tests
in destructive mode (i.e. surface scan tests). Destructive tests will speed up testing
because FDAT does not preserve the data on the media prior to the test beginning.
Unlike non-destructive tests any data present on the media prior to the test
beginning is lost. FDAT allows for enabling or disabling destructive tests as well as
specifying a range of destructive and non-destructive sectors on the tested drive.
This is done through the configuration of the FDAT.INI .If destructive and
non-destructive ranges somehow overlap then the overlapped area is considered
non-destructive. For example if users specify both destructive and non-destructive
ranges as the same then the entire drive is tested as non-destructive.
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Hardware Maintenance Manual