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Chapter 2: Installation
15
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.
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.
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).
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.