Sun Java System Application Server Enterprise Edition 8.1 2005Q2 Deployment Planning Guide

- Previous: Number of Application Server Instances
- Next: Number of HADB Hosts

## To determine the required number of HADB nodes

1. Determine the following parameters:

   - Maximum number of concurrent users, nusers.

   - Average BLOB size, s.

   - Maximum transaction rate per user, referred to as NTPS.

2. Determine the size in Gigabytes of the maximum primary data volume, V data.

   Use the following formula:

   Vdata = nusers . s

3. Determine the maximum HADB data transfer rate, R dt.

   This reflects the data volume shipped into HADB from the application side. Use the following formula:

   Rdt = nusers . s . NTPS

4. Determine the number of nodes, N NODES,.

   Use the following formula:

   NNODES = Vdata /5GB

   Round this value up to an even number, since nodes work in pairs.

- Previous: Number of Application Server Instances
- Next: Number of HADB Hosts

- © 2010, Oracle Corporation and/or its affiliates