Freecom Ultrium Generation 2, Руководство пользователя

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Step 3: Connect the SCSI cable
A 68-pin, wide, VHD-to-HD SCSI cable is provided to connect your Ultrium tape drive to a
VHD SCSI port on an LVDS SCSI bus. If your server or FC/SCSI bridge has an HD SCSI port,
you must either purchase and install a VHD-to-HD adapter or use an HD-to-HD cable instead
of the supplied cable.
Caution
To avoid damaging the server or tape drive, ensure that both are powered off while you
attach the SCSI cable. If you are connecting to a fibre channel/SCSI bridge, we recommend
that you power off the bridge, if possible.
1 Make sure you are connecting to a recommended SCSI bus type. See “Step 1: Check the SCSI
connection” on page 9. Do not connect the tape drive to a single-ended SCSI bus, to the same
bus as your disk drive or to a RAID controller.
2
Perform a normal system shutdown and turn off the server and any connected peripherals.
3
Attach the VHD connection on the SCSI cable to the server’s external SCSI connector and
secure it by tightening the screws.
If connecting to a fibre channel/SCSI bridge, attach the SCSI cable to a VHD SCSI port on
the bridge. Refer to the bridge documentation for information about connecting the bridge to
the fibre channel adapter on the server or to the SAN fabric.
4
Attach the HD connection on the SCSI cable to the SCSI-IN connector on the rear panel of the
tape drive and secure it by tightening the screws. (See Figure 4.) Do not connect the cable to
the SCSI-OUT connector.
The SCSI-OUT connector is only used when daisy chaining two devices. This is not generally
recommended. If you need to connect more than one device to the SCSI bus, we recommend
installing your tape drive on an Ultra 4 (320) SCSI bus.
Does the tape drive need a terminator?
If the tape drive is on a dedicated SCSI bus, it does not require a terminator. When the cable
is connected to the SCSI-IN connector, the enclosure provides active termination.
If it is not the only device on the SCSI bus, you must make sure that the SCSI bus is
terminated. You can do this in two ways:
• Place the tape drive at the end of the chain and attach the HD connection on the
SCSI cable to the SCSI-IN connector; the enclosure provides active termination.
• Attach the HD connection on the SCSI cable to the SCSI-IN connector and use the
SCSI-OUT connector on the tape drive to connect to the next device in the chain.
Make sure that the last device in the chain is terminated with an LVD multimode
terminator.
gen2 external oem.fm Page 13 Thursday, February 13, 2003 3:02 PM