OSF DCE Administration Guide--Introduction

Conﬁguring DCE

8.4 Clock Synchronization

All servers and clients being conﬁgured should have clocks that are at least loosely

synchronized. Using the SYNCH_CLOCKS environment variable described in Chapter

10, you can specify that the clocks will be synchronized automatically or that the user

should be prompted to synchronize the clocks if they are out of synch by a speciﬁed

amount. For DFS conﬁgurations, the clocks should be synchronized automatically.

While it is not required, it is recommended that you conﬁgure the Security master server

machine with a DTS server. This will allow Security clients to synchronize clocks with

the Security server machine.

8.5 Security and CDS Database Size

Both the Security servers (master and replicas) and the CDS servers (initial and replicas)

maintain databases. The machine on which a Security server or a CDS server is

conﬁgured must have sufﬁcient disk space to accommodate these databases. The size

required for the Security and CDS databases depends on the platform and the operating

system. Choose machines large enough to accommodate future growth.

Use the following general requirements for the Security database:

• For each principal: 1000 bytes of physical memory and 700 bytes of disk space.

• For each account: 1700 bytes of physical memory and 300 bytes of disk space.

The virtual size of the CDS databases increases substantially as new directories and

objects are added. When entries are removed, the memory associated with them may be

reused but is not deallocated. Although it can vary depending on the platform, each

directory can use roughly 38.5 Kbytes of virtual space. Process data size and paging

space should also be considered.

8.6 Accessing the DCE Conﬁguration Menu

All conﬁguration functions are chosen from the DCE Conﬁguration Menu. To access the

DCE Conﬁguration Menu, at the DCE Main Menu, type 2 and press <RETURN>.

The dce_conﬁg script displays the DCE Conﬁguration Menu.

DCE Configuration Menu (on host_name)

1. Initial Cell Configuration

2. Additional Server Configuration

3. DCE Client

4. DFS Client

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