Freecom Ultrium Generation 2, Руководство пользователя

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9
Step 1: Check the SCSI connection
Use the following questions to help you check your SCSI connection. If you answer ‘Yes’ to all
these questions, you are ready to install your tape drive. If you answer ‘No’, you will probably
need to purchase and install additional items.
table 1: supported SCSI bus types
SCSI Bus Type Transfer Speed Supported
Ultra 3 (160) LVD Up to 160 MB/s Yes. This is the recommended configuration.
Ultra 4 (320) LVD Up to 320 MB/s Yes . This is the recommended configuration for more
than one drive per bus.
Ultra 2 LVD Up to 80 MB/s Yes, but this will not provide optimum performance.
Single-ended, wide Up to 40 MB/s Yes, but this is not recommended as it will severely
restrict performance.
Do not connect to a narrow SCSI bus.
High Voltage
Differential
Up to 40 MB/s No. The drive will not work and you may damage
the drive or controller
1
Are you connecting to a SCSI
bus on a server?
4
Will the drive be the only
device on the bus? This is the
recommended configuration.
Do not connect to a RAID
controller channel. This is for
disk drives only.
3
Is the spare port on an Ultra 3
(160) or Ultra 4 (320) SCSI
bus?
2
Is there a spare SCSI port on
the server?
Performance may be impaired. See table
below. Consider replacing your card with
one of the recommended HBAs .
Purchase and install one of the recommended
HBAs into an unused 64-bit PCI expansion
slot. (The HBA can also be installed in a 32-
bit PCI expansion slot, but performance may
be degraded.)
For fibre channel connections, you need a
fibre channel/SCSI bridge of the correct
specification . Contact your fibre channel
infrastructure vendor for details.
If you have a spare PCI slot, install a new
Ultra 160 HBA to provide a dedicated SCSI
bus. If you have to configure more than one
drive on the same bus, install an Ultra 4
(320) HBA and make sure the last device on
the bus is terminated.
No?
Yes?
Yes?
Yes?
No?
No?
No?
5
Does the HBA/controller have
a VHD SCSI connector?
Purchase and install a VHD-to-HD adapter
or use an HD-to-HD cable instead of the
supplied VHD-to-HD cable.
Yes?
No?
gen2 external oem.fm Page 9 Thursday, February 13, 2003 3:02 PM