Promise Technology 15110 user manual Verify the Scsi HBA Card

Chapter 2: Installation

Verify the SCSI HBA Card

Data travels between the Host PC and the VTrak storage system through a SCSI connection. Therefore, the SCSI HBA card is an essential part of the Host PC and VTrak system.

The table below lists the minimum and preferred specifications for a SCSI HBA card.

	Minimum	Preferred
Data Transfer Rate	80 MB/s	160 MB/s
PCI Bus	32-bit	64-bit
PCI-X Bus	no	yes
External Connector	68-pin HD*	68-pin VHDCI
Cable Interface	LVD	LVD
Supports LUNs	yes	yes

* Requires use of a 68-pin HD to 68-pin VHDCI SCSI cable (available from Promise Technology).

Refer to your system and/or SCSI HBA manual for these specifications.

VTrak has a peak sustained thoughput of more than 100 MB/s per channel. Using an 80 MB/s SCSI card will result in a performance bottleneck under certain

conditions.

Notes

For applications where two SCSI HBA cards are required, you can use a dual-channel SCSI HBA card.

Many single-channel SCSI HBA cards have multiple connectors. Be sure your card really is dual-channel.

If you connect two SCSI channels to a single-channel SCSI HBA card, only one channel will function.

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