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 more years of success, the ongoing retirements of top z/OS engineers means storage and I/O performance issues are often swept under the rug.

z/OS z15-DS8900F-3390 disk infrastructure

Since the inception of the mainframe, OS/360 and now z/OS engineers have sought to improve the performance of peripheral hardware infrastructures in order to optimize z/OS processors’ MSU resources. As years passed, the numbers of 3390 logical volumes utilized in datacenters multiplied by thousands.

Now in 2020, the number of senior mainframe engineers specialized in z/OS I/O has dwindled. Indeed, after lengthy careers and a well deserved retirement, about one engineer in two is not replaced. This means mainframe teams are asked to do more with less and performance monitoring has become relegated to low priority. However, SYSPLEX configurations are increasingly complex and I/O analysis with weighted averages can hide important performance information. Keeping control is critical for IT resiliency.



EADM AI (Easy Analyze DASD Mainframe) is an automated solution to:

1- analyze your data rich RMF or CMF files on a daily basis

2- get information on the root cause of response time drifts of some 3390 logical volumes that host strategic Enterprise files

3- receive z/OS DASD feature recommendations to remediate performance issues

EADM AI shows the essential without compromise. A quote from a customer summarizes this new solution: “Before we used EADM AI, we were mostly guessing when we had performance issues. Now we know exactly what’s wrong and we receive solutions“.