HP Ultrium tape drive Ultrium 230i manual Check the Scsi connection, Supported Scsi bus types

Step 1: Check the SCSI connection

Use the following questions to help you check your SCSI connection. Most users can use HP Library & Tape Tools to check the SCSI bus, see page 33. 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.

For product details, go to www.hp.com/go/connect.

1Is there a spare SCSI port on the server’s internal SCSI bus?

Yes?

2Does the SCSI bus type match the drive type, Ultra 320 for Ultrium 960, Ultra 160 for Ultrium 460, Ultra 2 for Ultrium 230?

(Make sure the ribbon cable is terminated. See page 19.)

Yes?

3Will the drive be the only device on the bus? This is the recommended configuration. Do not connect to a RAID controller channel.

No?

No?

No?

Purchase and install one of the recommended HBAs into an unused 64-bit PCI expansion slot. See table below.

Performance may be impaired. Consider replacing your card with one of the recommended HBAs. See table below.

Performance may be impaired, depending upon the tape drive model and SCSI bus. Ultrium 960 drives should always be on a dedicated bus. See table below.

SCSI Bus Type	Transfer Speed		Recommended for
		960	460	230
Ultra 320 LVD	Up to 320 MB/s	Yes, one drive	Yes, for up to two	Yes
		only per bus	460 drives per bus
Ultra 160 LVD	Up to 160 MB/s	Acceptable	Yes, one drive only	Yes, for up to two
			per bus	230 drives per bus
Ultra 2 LVD	Up to 80 MB/s	No	Acceptable	Yes, one drive only
				per bus
Single-ended,	Up to 40 MB/s	No	No	Acceptable, but it will
wide				restrict performance.
		Do not connect to a narrow SCSI bus.
High Voltage	Up to 40 MB/s	No. The drive will not work and you may damage the drive or
Differential		controller.

table 1: supported SCSI bus types

Note If you attach your drive to a higher-rated SCSI bus, the internal SCSI cable should be of the same specification as the SCSI HBA. For example, if you connect an Ultrium 460 to an Ultra 320 bus, make sure that the internal cable supports Ultra 320.

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