Service manual

Chapter 4

Hardware Sizing

Appropriate hardware sizing is a critical component of directory service planning

and deployment.When sizing hardware, the amount of memory available and the

amount of local disk space available are of key importance.

This chapter suggests ways of estimating disk and memory requirements for a

DirectoryServer instance.It alsotouches onnetworkand SSLacceleratorhardware

requirements.

Suggested Minimum Requirements

Table 4-1 proposes minimum memory and disk space requirements for installing

and using the software in a production environment.

Minimum requirements for specified numbers of entries may in fact differ from

those provided in Table 4-1. Sizes here reflect relatively small entries, with indexes

set according to the default configuration, and with caches minimally tuned. If

entries includelarge binary attribute valuessuchas digital photos,or if indexingor

caching is configured differently, then revise minimum disk space and memory

estimates upward accordingly.

NOTE For best results, install and configure a test system with a subset of

entries representing those usedin production. You can then use the

test system to approximate the behavior of the production server.

When optimizing for particular systems, ensure you understand

howsystem buses, peripheral buses, I/O devices, and supportedfile

systems work so you can take advantage of I/O subsystem features

when tuning these to support Directory Server.