PRODUCT NAME:  MIRA High Availability Management         SSA 31.86.00-A
               Software for VMS, Version 1.0 


HARDWARE REQUIREMENTS

Processors Supported

MicroVAX:  	  MicroVAX 3400, MicroVAX 3800 

VAXserver: 	  VAXserver 3400, VAXserver 3800

Processors Not Supported

MicroVAX:   	   MicroVAX II, MicroVAX 2000, MicroVAX 3100, MicroVAX 
                   3300, MicroVAX 3500, MicroVAX 3600, MicroVAX 3900
                                                   
VAXserver:  	   VAXserver 3100, VAXserver 3300, VAXserver 3500,  
                   VAXserver 3600, VAXserver 3602, VAXserver 3900,  
                   VAXserver 6000-210, VAXserver 6000-310, VAXserver 
                   6000-410, VAXserver 6000-420

VAX or VAXstation family of processors

Processor Restrictions

The processor must be part of any valid DV-3xMx3-xx MIRA Applications 
Switch Dual-Host configuration. 

MIRA Applications Switch systems based on the MicroVAX 3400 require a 
minimum revision of D04 for the M7624 CPU module.

Other Hardware Required

The MIRA Applications Switch watchdog board (KW32) is based on the 
M3108-PA module.  The minumum revision level for this module is E1.

Block Space Requirements (Block Cluster Size = 1):

Disk space requirements for installation:		      4200 blocks
							    (2151K bytes)

Disk space requirements for use (permanent):
					 4000 blocks, excluding event log
							    (2048K bytes)

These counts refer to the disk space required on each system disk. The 
sizes are approximate; actual sizes may vary depending on the user's 
system environment, configuration and software options selected.

OPTIONAL HARDWARE

The device error detection process is limited to devices where the driver 
uses the ON/OFF bit or the ERRCNT error counter to signal/log that an 
error happened for this device.

CLUSTER ENVIRONMENT

This layered product is fully supported when installed on any valid and 
licensed VAXcluster* configuration without restrictions.  The HARDWARE 
REQUIREMENTS sections of this product's Software Product Description and 
System Support Addendum detail any special hardware required by this 
product.

* V5.x VAXcluster configurations are fully described in the VAXcluster 
  Software Product Description (29.78.xx) and include CI, Ethernet, and 
  Mixed Interconnect configurations.

SOFTWARE REQUIREMENTS

VMS Operating System V5.3

VAX Ada V1.4 - V1.5 (if this product is to be accessed from applications 
in an ADA environment)

VMS Tailoring

For VMS V5.x systems,  the following VMS classes are required for full 
functionality of this layered product:

oo VMS Required Saveset

oo Programming Support

oo System Programming Support

oo Utilities

For more information on VMS classes and tailoring, refer to the VMS 
Operating System Software Product Description (SPD 25.01.xx).

GROWTH CONSIDERATIONS

The minimum hardware/software requirements for any future version of 
this product may be different from the minimum requirements of the 
current version.

DISTRIBUTION MEDIA

Tape: TK50 Streaming Tape

This product is also available as part of the VMS Consolidated Software 
Distribution on CDROM.

ORDERING INFORMATION

Software Licenses: QL-YHMA*-**
Software Media: QA-YHMAA-**
Software Documentation: QA-YHMAA-GZ
Software Product Services: QT-YHMA*-** 
  
* Denotes variant fields.  For additional information on available licenses, 
  services and media refer to the appropriate price book.

The above information is valid at the time of release. Please contact 
your local Digital office for the most up-to-date information.

The DIGITAL Logo is a registered trademark of Digital Equipment Corporation.
    
VAX, VMS and MicroVAX are trademarks of Digital Equipment Corporation.

June 1990
AE-PBFZA-TE