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Checking the SCSI connection
Use the following questions to help you check your SCSI connection. Many users can use HP
Library & Tape Tools to check the SCSI bus type, see page 37. If you answer ‘Yes’ to all these
questions, you are ready to install your autoloader. If you answer ‘No’, you will probably
need to purchase and install additional items. For compatibility and product details, go to
www.hp.com/go/connect.
table 1: supported SCSI bus types
SCSI Bus Type Supported
Ultra wide LVD Yes. This is a recommended configuration as long as the drive is
the only device on the SCSI bus.
Ultra 2 LVD, Ultra 3 (160) LVD,
Ultra 4 (320) LVD
Yes. These are recommended configurations, particularly if there
are several devices on the SCSI bus.
Ultra wide, single-ended Yes. But this is not a recommended configuration as it will restrict
performance.
Ultra narrow, single-ended Yes. But this is not recommended as it will severely restrict
performance and you will need a suitable cable or adapter.
High Voltage Differential No. The drive will not work and you may damage the drive or
controller
1 Is there a spare SCSI port on your
server?
4 Does the HBA/controller have a
VHD SCSI connector?
3 Will the autoloader be the only
device on the bus? This is the
recommended configuration. Do
not connect to a RAID controller or
the same SCSI bus as your disk
drive.
2 Is the SCSI bus type correct for the
SCSI specification of the device?
See table below. If the SCSI bus differs from
the recommended specification for the drive,
performance of either the drive or the bus may
be impaired. 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.)
If you have an Ultra HBA, performance may
be impaired. Consider installing (if you have
a spare PCI slot) or replacing your card with
an Ultra2, Ultra3 (160) or Ultra4 (320) HBA.
Make sure the last device on the bus is
terminated.
Yes
Yes
Yes
No
No
No
Purchase and install a VHD-to-HD adapter or
use an HD-to-HD cable instead of the supplied
VHD-to-HD cable.
No
5 You are ready to install the device.
Yes
autoload_master-frame6.fm Page 9 Monday, December 29, 2003 9:39 AM