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EK–KZPCM–UG. B01 5–1
5
DIGITAL OpenVMS Installation
This chapter describes briefly the DIGITAL OpenVMS driver that enables the KZPCM
Host Adaper to work with the DIGITAL OpenVMS operating system, and tells you how to
install the driver in the host computer.
5.1 DIGITAL OpenVMS Driver Description
NOTE
The minimum DIGITAL OpenVMS version for the
KZPCM Host Adapter is version 7.1-1H1.
The DIGITAL OpenVMS driver enables the use of Ultra SCSI disks to maximize
the PCI-based Alpha system I/O throughput and storage capacity. The driver is
optimized for minimum load on the system processor by use of a loadable
SCRIPT to handle low-level SCSI operations and minimize the number of inter-
rupt requests to the system. In the case of small I/Os, the DIGITAL OpenVMS
driver interrupts the host only once for each I/O, compared with several inter-
rupts per I/O for other SCSI adapters. The Ultra SCSI VMS driver features sup-
port for:
•
Ultra SCSI at speeds up to 40 Mb/sec per channel.
•
Synchronous negotiation (including Fast/Ultra SCSI).
•
Single-interrupt-per-small-I/O technology for maximum I/O throughput with
minimum CPU overhead.
•
Up to 15 disks per channel.
•
Boot and Install
•
Wide negotiation
•
Tagged command queuing
•
Multiple Logical Unit Numbers (LUNs)
•
Disconnect/Reselect
•
Scatter-gather