Hp StorageWorks DAT 72x10 Tape Autoloader Manual de usuario descargar pdf (Pagina 51)

5 Troub leshooting

Using H P Library & Tape Tools to diagnose problems

With HP Library & Tape Tools installed on the host server

• Identify all SCSI devices connected to your system

• View detailed conﬁguration, identiﬁcation, inventory, and drive information for the autoloader

• Easily update autoloader and drive ﬁrmw are

• Run advanced diagnostic tests, including connectivity, read/write, media validation, and testing

the

functionality of the autoloader

• View autoloader and drive error logs

• Generate a d etailed support ﬁle that can be e-mailed or faxed to your support representative

for analysis

The HP Library & Tape Tools diagnostic provides an intuitive graphical user interface with integrated

context-sensitive help. It can be downloaded free of charge from w

ww.hp.com/supp ort/TapeTools.

Installat

ion pr oblems

Problems e

ncountered during the installation of the autoloader a re usually caused by improper SCSI

bus conﬁg

uration, application software conﬁguration errors, or an incorrectly conﬁgured operating

system. I

the application software that you are using is not communicating with the autoloader after

installa

tion, check the following:

• SCSI ID: The autoloader uses a single SCSI ID. Depending on other devices attached to the same

SCSI bus and their SCSI IDs, you may need to change the SCSI ID of the autoloader or tape drive

before you ca n use the autoloader. Review the manuals for the other devices on the SCSI bus or

your operating system to determine which SCSI IDs are currently in use.

• LUN Sca

nning:

The autoloader uses two LUNs to control the tape drive (LUN 0) and autoloader

roboti

cs (LUN 1). Therefore the HBA must support LUN scanning and LUN scanning must be

enabl

ed. If the HBA does not suppor t LUN scanning or it is not enabled, only the drive will be

detected.

• SCSI Cabling: Verify that all SCSI cables are securely connected at both ends. Check the length

and

integrity of your SCSI cabling. Check the SCSI connector for bent pins. The length of the

inte

rnal SCSI cabling inside the autoloader is 20 cm (7.87 in.). This length must be included

calculations of cable length.

• For LVD SCSI the maximum length for a single device is 82 feet (25 meters). For multiple

devices, the maximum combined internal/external length is 40 feet (12 meters) .

• If you have a combination of LVD and SE devices on the bus, the maximum cable length

reverts to the SE speciﬁcation, which for Ultra devices is 1 0 feet (3 m eters) for four or fewer

vices, and 5 feet (1.5 meters) for more than four devices.

• Termination: If the autoloader is the only SCSI device — other than the SCSI host adapter —

on the

selected SCSI bus, i t must be terminated. Likewise, if the autoloader is p hysically the last

SI device on theSCSIbus,it mustbeterminated. Only thedevices physically locatedatthe

beginning and end of the SCSI bus should be terminated. Refer to the manuals supplied with other

devices on the SCSI bus for information on enabling or disabling termination on those devices.

• To terminate the autoloader, locate the terminator in the accessories package and press it

ﬁrmly into either of the t wo SCSI connectors on the back panel of the autoloader. Secure the

terminator by tightening the ﬁnger-screws until snug. The supplied terminator is “dual mode”

and

will work on both Low-Voltage Differential (LVD) and Single Ended (SE) SCSI buses.

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Hp StorageWorks DAT 72x10 Tape Autoloader Manual de usuario Pagina 51

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