5-18 Dell PowerEdge 4200 Systems Installation and Troubleshooting GuideWhy Run a SCSI Devices Test?If you check the SCSI hard-disk drive to determine theamount of available space, the operating system will prob-ably report problem areas. Problem areas on hard-diskdrives are common, because most hard-disk drives have asmall amount of space that is not usable. The hard-diskdrive keeps a record of this space so that the computer willnot attempt to use it. Identification of unusable disk space,unless it is an unusually large amount (over five percent ofthe possible total), should not be regarded as a cause fortesting the hard-disk drive.These are the most common symptoms that might promptyou to test a SCSI device:• A SCSI hard-disk drive fails during the boot routine.• Seek errors are reported by the operating system orapplication programs.• An error message appears on the screen stating thatthe computer cannot read from or write to a SCSIdevice.• Data on a SCSI device is corrupted or lost; this prob-lem may be intermittent. Once saved by a program,files cannot be properly recalled.Other Test GroupThe subtests in the Other Test Group verify that theembedded server management (ESM) system is workingproperly. The ESM system interacts with the systemBIOS and operating system to ensure that critical param-eters, such as temperature, are monitored and thatappropriate action is taken if a problem is detected.SubtestsThe three subtests in the Other Test Group and the func-tions they test follow:• ESM Firmware StatusTests to make sure the ESM software was down-loaded correctly and that the system is operational.• ESM Interface TestTests the interface between the host system and theESM system to ensure that all bits in the data portfunction correctly.• ESM Sensor TestVerifies the current measurements of the ESMsensors.Why Run an Other Test?These are the most common symptoms that might promptyou to run the ESM subtests in the Other test group:• If the Dell HIP server management program returnsa warning dealing with server management• If you want to verify that all voltages in the systemare being reported properly
