HP StorageWorks DAT Internal Autoloader Getting Started Guide

9
Checking the SCSI connection
Use the following questions to help you check your SCSI connection. As long as you have a
spare drive bay in your server you should have a spare connection on the internal SCSI bus.
You need to ensure it is the correct SCSI bus type. 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 Have you checked the SCSI
bus type and SCSI IDs in use?
4 You are ready to install the
device.
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 device,
performance of either the device or the bus
may be impaired. Consider replacing your
card with one of the recommended HBAs.
Users of most operating systems can use HP
Library & Tape Tools to do this. The SCSI
topic in the online User’s Guide provides
further advice on identifying SCSI IDs.
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.
Yes
Yes
Yes
No
No
No
autoload_master-frame6.fm Page 9 Monday, December 29, 2003 9:28 AM