HP LH4r HP NetRAID-4M Installation Guide - Page 29
provided. If the HP NetRAID-4M is powered off, the terminator
View all HP LH4r manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 29 highlights
Installing the Hardware Note: If you are attaching internal SCSI devices to a 68-pin internal ribbon cable that has a built-in terminator, you must remove the terminators from all devices attached to the cable. On most internal SCSI devices, the termination setting is controlled by a jumper or a switch, or by physically removing or installing one or more resistor modules. On most external SCSI devices, termination is controlled by installing or removing a terminating plug (see Figure 2-7 and Figure 2-8 on page 2-11). Read the device's documentation to determine how to enable or disable termination on your particular SCSI device. Termination power should be enabled on all SCSI devices in or attached to the server so that, if you remove a device that is supplying termination power, termination power on the channel is available from the other devices. Termination power is also automatically supplied to the four channels on the HP NetRAID-4M controller and cannot be disabled. Termination on SCSI devices can be enabled or disabled independent of from where the source of termination power is provided. If the HP NetRAID-4M is powered off, the terminator jumpers determine if its terminators are on or off - if no jumper is installed, the termination is off. If the HP NetRAID-4M is powered on, termination is set according to the device controller's BIOS setting. However, if the device jumper is on, termination is on regardless of the BIOS setting. The jumpers are shipped installed. Note: If the HP NetRAID-4M controller is installed within a clustering environment, the terminator jumper must be installed on all shared channels. To identify the termination jumpers, see Figure 2-11. 2-15