Compaq TRU64 Washer/Dryer User Manual


 
copied to each client system. The /usr file system is read only and is shared
among all client systems registered to the environment.
Figure 9–2: Environment Portion of DMS Area
/var/adm/dms
dms1.alpha
dms0.alpha
rootroot
shared
/usr
ZK-0935U-AI
shared
/usr
The root file system contains copies of the kernel, .vmunix, vmunix and
other primary system files. These primary files can be in either new form
(files supplied in the operating system distribution kit and prefixed with
.new..) or in prototype form (files prefixed with .proto..).
Do not customize the .new.. version of a file.
The .proto.. files have special significance for DMS environments. By
modifying the .proto.. files, you can customize the DMS server to meet
specific needs. You can use these customized .proto.. files when you
configure the DMS client environments. You also can modify standard files
such as /etc/hosts and /etc/fstab so that DMS clients do not have
to modify them.
The /usr file system contains common files that can be used without being
tailored by clients registered to the DMS environment.
DMS environments can be created with different combinations of products to
allow servers to provide diversified service based on client’s software product
needs. For example, you could have a DMS environment with only the base
operating system. Another DMS environment could have the base operating
system plus any number of additional products (such as DECLadebug or
DEC Fortran) installed. Multiple environment areas can be established
in separate partitions to support a variety of environments, or to improve
performance, or to support more clients than allowed by the disk space
available in the /var/adm/dms directory.
The server does not use any of the DMS area. System administrators can
access the DMS area as required for maintenance and for installation or
removal of layered products, but the area is not used by the server itself.
9–4 Dataless Management Services