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SE7500CW2 Troubleshooting Guide - 7 - 08/21/02
cause false signals to be transmitted commanding the system to boot. Before removing the cover
to your chassis, you should always
• Turn off the server via the power switch on the front panel.
• Unplug the AC cord from the server.
4) 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. Note you only need to load the option ROM for a SCSI card if you intend to
boot to any of the devices attached to that card. As long as the hard drives are seen by
your operating system, you can still access them and use them for storage.
• Verify that pin 1 on the data cable connects 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.
• Check your SCSI ID numbers. SCSI devices must have their own unique ID on the SCSI
bus. This number must be set with jumpers on the device. ID number should be set
starting at 0 and must be set lower than 8 if booting from the drive.
• Check for proper termination on the SCSI bus.
• If using an IDE drive, verify that the drive setting is set correctly (Master or Slave)
If your hard drives still do not show, please fill out the included issue report 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)?
• What kind of terminator do you have at the end of the cable? (Manufacturer and type
e.g. Ultra 160)
Note: only the last device on the SCSI channel requires termination. All LVD devices
require “active” vs. “passive” terminators.
• What are the SCSI IDs of the devices on your SCSI bus?
• How many SCSI channels are you using?
• What memory is the system using? Is it on the tested memory list? Visit the Intel support
site for an updated memory list:
http://support.intel.com/support/motherboards/server/SE7500CW2