HP StorageWorks MSA 2/8 HP StorageWorks Fabric OS V3.1.x/4.1.x Reference Guide - Page 675

ramTest Operands The method used is to write pattern D to location N, write the complementary pattern D to location N+1, and then read and compare location N to location N+1. Bump the location to test: N=N+1. Repeat the double write and read until all locations are tested with the following patterns: - 0x55555555 - 0x69696969 - 0x3c3c3c3c - 0x1e1e1e1e - 0x87878787 - 0x14284281 - 0x137ffec8 - 0x0f0f0f0f - 0x00000000 Since the test requires the operating system to operate, it does not and cannot test all 16 MB of the memory. Instead it tests the largest portion as given by the OS, which is typically about 13 MB. This command has the following operand: patternSize Specify a number from 0 to 9 to determine the number of patterns used for the data subtest. The default value is 0 which runs all nine patterns. A value from 1 to 9 will execute the specified number of patterns. Any value over 9 is truncated to 9. Only the data subtest is configurable. The address subtest is always executed. This operand is optional. Example To run the RAM test on a switch: switch:admin> ramTest Running System DRAM Test ...... passed. Fabric OS Version 3.1.x/4.1.x Reference Guide 675