Specifications

OpenVMS Operating System for Alpha and VAX (Versions 7.1, 7.1–1H1, 7.1–1H2, and 7.1–2) SPD 41.87.06
The following example configurations are based on the
previous table:
System
Minimum
Supported
Memory
OpenVMS Alpha Version 7.1–2, DECwin-
dows Motif with applications executing
remotely, and TCP/IP Services (standalone
system)
32.0 MB
OpenVMS Alpha Version 7.1–2, DECwin-
dows Motif with applications executing
locally, VAXcluster and TCP/IP Services
32.0 MB
OpenVMS Alpha Version 7.1–2, DECwin-
dows Motif with applications executing
remotely, and DECnet-Plus (standalone
system)
64.0 MB
OpenVMS Alpha Version 7.1–2, DECwin-
dows Motif with applications executing
locally, VAXcluster and DECnet-Plus
64.0 MB
OpenVMS Alpha Version 7.1–2, DECwin-
dows Motif with applications executing
remotely, and DECnet for OpenVMS VAX
(standalone system)
32.0 MB
OpenVMS Alpha Version 7.1–2, DECwin-
dows Motif with applications executing
locally, VAXcluster and DECnet for Open-
VMS VAX
32.0 MB
OpenVMS VAX Memory Space Requirements
The minimum amount of memory supported for an
OpenVMS VAX environment is dependent upon the spe-
cific system(s) being used and the overall type of con-
figuration and application requirements. The minimum
amount of memory supported for a standalone VAX sys-
tem running OpenVMS VAX Version 7.1 is 4 MB. The
minimum amount of memory supported for a VAX work-
station running OpenVMS VAX Version 7.1 is 12 MB.
The following tables give examples of the minimum
amount of memory required for a system user to in-
stall, boot, and log in to OpenVMS VAX Version 7.1.
Specific requirements depend upon the type of system
being used and what other software is installed. To en-
sure satisfactory performance of applications, additional
memory is required.
Component
Necessary
Memory
OpenVMS VAX Version 7.1 4.0 MB
Digital TCP/IP Services 1.0 MB
DECnet-Plus 1.0 MB
DECnet for OpenVMS VAX .5 MB
VAXcluster 1.5 MB
DECwindows Motif with remote execution
of applications (X11 Display Server only)
1.5 MB
DECwindows Motif with local execution of
applications (includes X11 Display Server
and DECwindows Motif layered product)
12.0 MB
The following example configurations are based on the
previous table:
System
Minimum
Supported
Memory
OpenVMS VAX Version 7.1, DECwindows
Motif with applications executing remotely,
and TCP/IP Services (standalone system)
8.0 MB
OpenVMS VAX Version 7.1, DECwindows
Motif with applications executing locally,
VAXcluster and TCP/IP Services
12.0 MB
OpenVMS VAX Version 7.1, DECwindows
Motif with applications executing remotely,
and DECnet-Plus (standalone system)
8.0 MB
OpenVMS VAX Version 7.1, DECwindows
Motif with applications executing locally,
VAXcluster and DECnet-Plus
12.0 MB
OpenVMS VAX Version 7.1, DECwin-
dows Motif with applications executing
remotely, and DECnet for OpenVMS VAX
(standalone system)
8.0 MB
OpenVMS VAX Version 7.1, DECwindows
Motif with applications executing locally,
VAXcluster and DECnet for OpenVMS VAX
12.0 MB
Note: These are the minimum memory requirements.
More memory is required for satisfactory performance
of the operating system and DECwindows Motif applica-
tions. The performance and memory usage of DECwin-
dows Motif systems is particularly sensitive to system
configuration and window and application usage. Re-
mote execution of an application requires an additional
system that runs the application while the display of the
application occurs on the local workstation.
Please refer to the associated layered product Soft-
ware Product Descriptions for their memory require-
ments. Please refer to the OpenVMS VAX documenta-
tion for more information concerning performance con-
siderations.
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