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System, memory and storage minimum requirements and recommendations for optimal processing.

z/IRIS Linux Server (a.k.a. IronTap)

The requirements and recommendations below should achieve an average processing throughput of 10,000 SMF records per second. Users should adjust the following requirements as needed to achieve the required SMF processing throughput in each environment.

Hardware requirements 


Quad Core Processor (2,5 GHz) x86_64 compatible (e.g.: Intel® Core™ i5-2400S Quad-Core Processor 2.5 GHz, Intel® Core™2 Quad Processor Q8300, AMD A6-6310 Quad-Core Processor or higher)


2 GB


10 GB

Software requirements

Recommended Linux distributions

Ubuntu 16.04+, Debian 7+

Compatible with virtual machines.


Supports operating systems with English language support only.

Java platform

OpenJDK 11

AdoptOpenJDK is recommended

z/OS Client

zFS mounted file system

Minimum allocated space

2000 KB

Mainframe software requirements

Supported z/OS releases

z/OS 2.1, z/OS 2.2, z/OS 2.3, z/OS 2.4

Required Java platform

IBM SDK, Java Technology Edition, Version 8 64 Bit

SMF mode

At least 1 SMF in-memory resource must be defined for any SMF record types that will be streamed via z/IRIS. 

SMF Logstream mode is required to activate SMF in-memory resources.


TCP/IP must be active and configured on z/OS.

Depending on SMF record sizes and SMF record type generation frequency, users should ensure that the number of SMF record types in a single SMF in-memory resource will not result in a loss of SMF records due an exceptionally high SMF in-memory wrap-around rate.

Apache Kafka

Supported Version

2.1.0 or newer

Since version 0.10.2 Apache Kafka provides a bi-directional compatibility policy. This means that older versions may work as well.  We recommend always using the latest generally available libraries as they include vital security patches and performance improvements.

Throughput Capability

10,000 SMF Records/s (~35.000 KB/s depending on the type of records)

Supported SMF records

Click here for the SMF record matrix

Distributed Db2 trace streaming for APM integration 

Db2 for z/OS Releases

Db2 for z/OS v11, Db2 for z/OS v12

SMF Record Types


Supported JDBC Features

JDBC 4.0

Supported IFCIDs


172 (TRACE(PERFM) CLASS(30-32))

58-66 (TRACE(PERFM) CLASS(30-32))