HP StorageWorks MSA 2/8 HP StorageWorks Fabric OS V3.1.x/4.1.x Reference Guide - Page 132

Fabric OS Commands cmemRetentionTest Test the data retention of the central memory SRAMs. Synopsis: V3.1.x cmemRetentionTest [passcount] Synopsis: V4.1.x cmemretentiontest [--slot number][-passcnt count][-datatype type][-ports itemlist][-seed value] Availability Admin Release V3.1.x and V4.1.x Description Use this command to verify data retention in the central memory SRAMs in the ASIC. The method used is to write a fill pattern to all SRAMs, wait 10 seconds, and then read all SRAMs checking that data read should match data previously written. Repeat using the inverted version of the pattern. The patterns used are as follows: 1) 0xffffffff (and 0x00000000) 2) 0x55555555 (and 0xaaaaaaaa) 3) 0x33333333 (and 0xcccccccc) 4) 0x0f0f0f0f (and 0xf0f0f0f0) 5) QUAD_RAMP with a random seed value (and its invert) Note: This command may not be executed on an enabled switch. You must first disable the switch using the switchDisable command. 132 Fabric OS Version 3.1.x/4.1.x Reference Guide