User's Manual

omdiag: Using the Diagnostic Service 31
• Extremity Test — Attempts to access sectors beyond the range and confirms the error received.
• Read-Write Test — Targets an appropriate number of sectors. The data on each of these sectors is read
into a buffer where it is stored until it is restored. The algorithm then writes a stream of roving data
onto each sector. It then returns to the first designated sector and reads back the data to confirm the
data integrity. After this, the original data is restored.
NOTICE: On systems running a supported Red Hat Enterprise Linux operating system, disconnecting the USB cable
of a USB diskette drive while the test is running might cause unpredictable results.
NOTE: Defective diskettes may cause the diskette drive test to fail. If an error occurs, insert a different diskette
and run the test again.
NOTE: Read-only diskettes will cause diskette drive test failures. If the test fails, ensure that the read-only switch
on the diskette is in the read-write (or unlocked) position and run the test again.
omdiag storage idedevdiag
Use the omdiag storage idedevdiag to test IDE hard drives to verify that they are functional. The storage
controller test performs the following tests:
IDE Hard Disk Test — Tests the hard drives on your system. This test verifies a drive's ability to respond
to commands, return diagnostic information, and ensure data integrity across the entire
hard-drive surface.
omdiag storage raidctrl
Use the omdiag storage raidctrl command to validate normal operations of Adaptec and LSI RAID
controllers and connected hard drives. This command allows a user to test all RAID controllers and
attached drives. With more command options, a specific controller and its connected hard drives
may be tested.
• Adaptec RAID Controller Hardware Test — Performs various tests to validate normal operations of
Adaptec RAID controllers. It allows a user to selectively test a specific controller. The test retrieves and
verifies the status information of the main components of the controller. It performs basic and
advanced operations to verify the working status of the controller. The Adaptec Controller Hardware
test performs the following tests:
– Pause-resume I/O Test — Verifies the Pause I/O and Resume I/O functions of the controller on all
of the buses.
– Device scan Test — Verifies the status of devices attached to the controller. This test takes a
snapshot of the status of current attached devices, rescans for all devices, and then compares the
status with the first snapshot, reporting any changes.
– NVRAM and battery test Test — Checks for the existence of a nonvolatile random access memory
(NVRAM) and a battery module. If an NVRAM and a battery are present, the test verifies the
normal operation of these modules.
– Global cache Test — Retrieves the global cache parameters and verifies the normal operation of
this function.