z/OS storage
How to read a zPulse daily mail: DASD, CPU, space and tape
A zPulse daily mail comes from a scheduled study, with charts in the body and the period in the subject. Learn to read the DASD, CPU, DCOLLECT and tape mails.
Blog
z/OS storage performance, explained
How to read RMF, CMF, SMF and DCOLLECT data, and what it says about your disks, tapes and CPU. Written by Technical Storage from its z/OS storage work since 1997.
Latest articles
zPulse · Disk
How to read RMF 74.1 DASD response time: CONN, DISC, PEND, IOSQ
RMF 74.1 DASD response time is IOSQ, pending, disconnect and connect time added up. Learn what each part means and in which order to read them on z/OS.
zPulse · Disk
Replacing EADM: what stays the same and what changes with zPulse Disk
Replacing EADM with zPulse keeps the RMF and CMF disk analysis you know. Learn what stays, what is new, what to prepare and how the move to zPulse works.
zPulse · Tape
Tape mount analysis on z/OS: what SMF 21 tells you
SMF 21 records each tape demount with its volume, drive and error counts. See what it brings to tape mount analysis on z/OS, and what you need beside it.
z/OS storage
z/OS storage performance glossary: the key terms of RMF, CMF, DCOLLECT and tape
A z/OS storage performance glossary: the measurement, disk, CPU, tape and space terms of RMF, CMF and DCOLLECT data, each defined in one plain sentence.
2014–2024
From our archive
Our news and newsletters from the previous website, kept as they were published. EADM, EATM and EAMC are now the Disk, Tape and CPU modules of zPulse.
News archive · 2024
IBM announced the general availability of the Storage DS8A00
IBM announced the general availability of the Storage DS8A00, designed for enterprise-class storage and specifically tailored for IBM Z mainframe architectures.
News archive · 2023
Productivity gains in the Mainframe Storage DS8900 environment.
Following retirements z OS I/O Performance Experts you will have to find solutions to help you in your daily tasks.
News archive · 2022
Mainframe Storage Performance z16 and DS8900 RMF V2R5
For years, our customers who have been using our stand-alone EADM Software application for monitoring IBM z OS disks are always satisfied with the evolution of z…
News archive · 2022
Comment simplifier les études de performances disques z OS avec EADM ?
Depuis des années les fichiers RMF et CMF sont des supports précieux pour comprendre/résoudre les problèmes de performances I/O Disk z OS et Tape z OS.
News archive · 2020
Tape Has Become a Strategic Imperative in the Mass Storage
For years z/OS engineers have been striving to improve the performance of peripheral hardware infrastructures in order to optimize MSU resources of z/OS processors.
News archive · 2020
Mainframe Storage Performance DS8900 in TANDEM mode:
This summer, EADM developers took up the heights for a tandem skydiving mission. Accompanied by a pro, they jumped from 3.5 km. Do like them: leap into z/OS disk…
News archive · 2020
2020... EADM HOT TOPICS
If you are looking for work in z/OS performance management, now is the ideal time. EADM will accompany you and help you find modern solutions to issues…
News archive · 2020
Is the Coronavirus Affecting IOPS in Mainframe Shops?
It is now evident that the impact of COVID-19 can be measured through I/O activity in z/OS datacenters. The daily graphs provided by EADM have shown customers…
News archive · 2020
With EADM AI 2020, Never Sweep z/OS Performance Issues Under The Rug Again
To sweep under the rug is an expression meaning to conceal a problem expediently rather than to remediate it thoroughly. As the mainframe is poised to enjoy many…
News archive · 2020
AI Reduces Risk In City Traffic and In z/OS Mainframe Availability
Beyond the context that individuals are free to circulate, AI algorithms on traffic cameras can locate events or individuals potentially dangerous for the…
News archive · 2020
2020 zOS DASD PERF STUDY
IT shops are responsible for Performance Management. It’s always been so as each z/OS customer has a specific environment with complex and specific rules. It is…
News archive · 2019
Artificial Intelligence (AI) for Mainframe Storage z OS is making headways.
EADM’s AI now allows z/OS Managers to see major gains in DASD performance management while helping reduce non productive MSU consumption. Both old and new tools…
News archive · 2019
When to run zOS DEFRAG?
Below is NOT a map of the Far East. It is the fragmentation map of disks in a zOS data-center. The red indicates the “Average Frag Index” is too high, which…
News archive · 2019
Ready to EATM 2019
There is an increasing number of Big Data indexing applications able to create myriads of graphs. But reccurring questions in data-centers are what kind of…
News archive · 2018
EADM and EATM are now ELK ready
Every day, our system expert tools analyze thousands of IBM RMF and BMC CMF reports in AUTO mode to monitor the performance of z OS DASD and Tape such as DS8000…
News archive · 2018
BigData EADM
EADM's new feature will help you in your business : performance management.
News archive · 2018
EADM Annual Reporting
Our software applications were created with the help of customers who desire to create intelligent and valuable reports.
News archive · 2018
EATM helps you meet GDPR regulation
EATM is now able to analyze your zOS Tape Management and help you identifiy unscheduled use of your private customer data.
News archive · 2016
Try our DB2 Disk Surveillance Solution Based on z OS RMF or CMF
All You Risk is to Change Your Mind
News archive · 2016
Try our Disk Surveillance Solution Based on z OS RMF or CMF
All You Risk is to Change Your Mind
News archive · 2014
Training of young students often involves internships in enterprises and this year one of our trainees succeeded in the ‘’MASTER THE MAINFRAME‘’ world event.
Following four weeks of training in IBM z/OS concepts, Franck joined a team dedicated to DASD 3390 and TAPE 7700 performance. Franck is 19 years old, he is an IT…