Other Issues

Issue 8: Some of my hard drives show up during POST and some don’t

Check on the following:

∙Are you using third party SCSI adapters? System memory limitations limit the number & size of option ROMs in the system. If you place too many adapters or adapters that take up too much space in memory, they may not install and show the hard drives connected to them.

∙If you disconnect your hard drives from the third party adapter and connect them to the on- board adapter, do they show up?

∙Verify that pin 1 on the data cable is connected to pin 1 on the device. In most cases, if you orient the data cable so that the colored stripe on the cable is pointing towards the power connector on the device, you will have proper orientation.

∙Verify that the device power cable is firmly connected.

∙Are your hard drives properly terminated? If you are using Ultra 2 or Ultra 160 drives without a hot-swap backplane, a terminator needs to be placed in the last connector on the SCSI cable. Ultra 2/Ultra 160 devices do not provide their own termination logic like Ultra Wide devices did.

∙Check your SCSI ID numbers. SCSI devices must have their own unique ID on the SCSI bus. This number is set automatically when using an Intel SCSI hot-swap backplane, but must be set with jumpers on the device when using a SCSI cable. ID number should be set starting at 0 and must be set lower than 8 if the drive is to be booted from.

If your hard drives still do not show, please fill out the included customer support form and call your customer support representative. Please pay special attention to the following information:

∙What add-in adapters do you have in your system (manufacturer and model number)?

∙What types of hard drives are in the system (manufacturer and model number)?

∙If you are using a SCSI cable to attach your drives, what kind of terminator do you have at the end of the cable? (manufacturer and type e.g. ultra 160)

∙What are the SCSI IDs of the devices on your SCSI bus?

∙How many SCSI channels are you using?

∙Are you using a hot-swap backplane with your third party adapter?

∙What memory is being used? Is it on the tested memory list? Contact your customer service representative for the latest tested memory list.

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SKA4 Baseboard Product Guide