Directory Service Manager for DECdns HyperHelp System
*HyperReader
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Shows the clearinghouses where the directory is replicated.
The master or the read-only icon next to the clearinghouse
Sorry. HyperReader cannot reproduce this figure. Sorry. HyperReader cannot reproduce this figure. indicates the type of replica:
The master replica is the first instance of a specific di-
rectory in the namespace. After you make copies of the
directory, you can designate a different replica as the
master, if necessary, but only one master replica of each
directory can exist at a time.
A read-only replica is a copy of a directory that is avail-
able only for looking up information. DECdns does not
create, modify, or delete names in read-only replicas; it
simply updates them with changes made to the master
replica. Read-only replicas save resources because DECdns
does not make changes in them, nor does it have to gather
changes from them to disseminate to other replicas.