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KZASA Fast Wide Differential SCSI Disk Adapter

HIGHLIGHTS

o  FutureBus+ to FWD SCSI Disk Adapter for DEC 4000 and DEC 7000 DEC OSF/1
   systems

o  Provides for connectivity of up to 4.7 Tbytes of data on DEC 7000 systems
   and up to 1.8 Tbytes on DEC 4000 systems

o  Option of choice for connecting to the HSZ40

PRODUCT DESCRIPTION

The KZASA adapter is a FutureBus+ (FB+) to Fast Wide Differential (FWD) SCSI
disk adapter for the DEC 4000 and DEC 7000 series of systems. It occupies
one FB+ I/O slot and has one SCSI bus that supports up to seven HSZ40
controllers. It provides high performance and connectivity capabilities to
build extremely large databases.

Each KZASA supports up to 7 HSZ40 controllers, which in turn can connect to
42 disks. Since 8 KZASA adapters are supported on DEC 7000 systems, that
translates to 4.7 Terabytes of data. Three KZASAs are supported on DEC 4000
systems, allowing up to 1.8 Terabytes of data. And because the KZASA has
built-in differential bus transceivers, no DWZZA converter box is needed.

AVAILABILITY AND ORDERING
The KZASA disk adapter is available now. For DEC 7000 systems, users must
have a DWLAA-**, FB+ Plug-in-Unit. All DEC 4000 systems come with six
integral FB+ I/O slots.

Order No.        Description

KZASA-AA	 FB+ to FWD SCSI Disk Adapter
DWLAA-AA	 Internal FB+ Plug-In-Unit
DWLAA-BA	 External FB+ Plug-In-Unit

TECHNICAL DATA

o  Currently supported by V2.0 of DEC OSF/1 AXP software. Will be supported
   on V3.0 by late September.

o  KZMSA/KZASA Comparison:

                          KZMSA	                   KZASA

SCSI technology:	  Fast SCSI-2		   FWD SCSI
I/O slot(s)		  Occupies 1 XMI	   Occupies 1 FB+
No. of channels		  2			   1
Support HSZ40		  Yes (1/Channel)	   Yes (8/Channel)
I/Os per channel	  650			   950
Support direct
  Disk connection	  Yes			   No
  Boot support		  Yes			   No
  Tape support		  Yes			   No
DWZZA needed		  Yes			   No
Maximum disk supported	  2.6 Tbs		   4.7 Tbs

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