Dell PowerVault 725N (Rackmount NAS Appliance) - Manual (Page 22)

Select Memory from the system diagnostics program main menu to access the following tests:
l BIOS ROM Test – Checks the data path of the BIOS ROM and makes sure the ROM is write-protected.
l Parity Test – Finds parity errors in all system memory. This test is the best way to identify and report data corruption because of DRAM system memory
hardware problems. This test diagnoses the parity error detection circuitry in DRAM.
l Pattern Test – Includes test routines that write a series of test patterns to memory, then read the patterns back and compare the read results with the
pattern that was written. The memory read and write instructions test all of DRAM.
l Extended Pattern Test – Includes test routines that write data to memory, read the data back, and compare the data.
l Walking 1's Test – Uses the Walking 1's Left Test and the Walking 1's Right Test routines to identify shorts on data lines and data bits that are hung at
1.
l Walking 0's Test – Writes shifting patterns to memory to find memory errors. This test uses the Walking 0's Left Test and the Walking 0's Right Test to
identify open data lines.
l Random Memory Test – Writes a random bit pattern to a randomly selected DRAM system memory location and reads the same memory location,
looking for the same bit pattern that was written.
l Address Test – Checks for short and open circuits on address lines.
l Refresh Test – Checks the DRAM system memory refresh interval rate and compares with the ISA standard.
l Data Bus Test – Ensures that the data bus works properly by testing individual lines of the data bus.
l Cache Memory Test – Identifies and tests the external cache memory, and then performs a random pattern test within the range of the cache memory
size to detect cache memory problems.
l Quick Memory Test – Quickly verifies that the entire installed memory can be accessed.
IDE Tests
When you are unable to access the operating system, the system diagnostics program's IDE tests can be used to perform read tests on the hard drives to
determine if they are functioning properly.
Select IDE from the system diagnostics program main menu to access the following tests:
l IDE HDD Read Test – Performs sequential and random read operations on the specified part of the IDE drive.
l IDE HDD Verify Test – Performs sequential and random read and verify operations on the specified part of the IDE drive.
l IDE HDD Seek Test – Determines the head movement ability of the hard drive over the specified cylinder and head range. It consists of a sequential
seek test and random seek test.
l IDE HDD Quick Test – Verifies that the software can fully access the selected IDE hard drive. The test reads small blocks of sectors at the beginning,
middle, and end of the hard drive.
Video Tests
Video tests perform read, write, and compare tests on the video memory to determine if the video controller and the monitor are functioning properly.
Select Video from the diagnostics main menu to access the following tests:
l Video Controller Tests
¡ VGA Controller Test – Tests the VGA controller.
¡ Video Memory Test – Performs read, write, compare tests on the video controller.
¡ VESA Video Memory Test – Checks the VESA® video memory.
l Video Monitor Tests
¡ Attribute Test – Checks the attributes of the display adapter.
¡ Page Selection Test – Checks display pages.
¡ Color Test – Checks foreground, background, and border colors.
¡ Text Mode Test – Checks the text mode character sets of the display adapter.
¡ Graphics Mode Test – Checks the graphics mode of the display adapter.
¡ VESA Video Modes Test – Tests the supported VESA video modes.
USB Test
The USB test verifies functionality of the USB. Select USB from the system diagnostics program main menu to access the test.
Using the System Diagnostics Program Options Menu to Run Tests and Generate Test
Reports
The system diagnostics program allows you to run tests on multiple components using the Options menu. The Options menu also allows you to set test
NOTE: If you are able to access your operating system, it is recommended that you use the Dell OpenManage Hard-Drive Diagnostics program to test
your hard drives online. See " Running the Dell OpenManage Hard-Drive Diagnostics Program ."
NOTE: With the exception of the IDE HDD Quick Test, the following IDE tests can take up to a day to complete. It is recommended that you first run the
quick test to see if the problem can be quickly identified before running more comprehensive tests.