Paper Info
Title
Concurrent driver upgrade: method to eliminate scheduled system outages for new function releases
Abstract
The reliability, availability, and serviceability goal for an IBM zSeries® system is to provide 24-hour-per-day, 365-day-per-year service with reduced system downtime. The continuous reliable operation rate has been improved with every new zSeries release by using error prevention, error detection, error recovery, and other methods that contribute to avoiding unplanned interruptions. Until now, planned downtime--for example, the time needed to upgrade a zSeries to the nextfirmware driver--had not yet been addressed. We developed the concurrent driver upgrade (CDU) feature so that customers could add new functions without downtime. It is now possible to upgrade the zSeries firmware engineering change (EC) driver to the next EC level without any performance impact during the upgrade. This paper describes the motivation and strategy of the CDU and describes its use.
Year
DOI
Venue
2007
10.1147/rd.511.0185
IBM Journal of Research and Development
Keywords
Field
DocType
new zseries release,nextfirmware driver,error recovery,concurrent driver upgrade,zseries firmware engineering change,new function release,planned downtime,error detection,system outages,error prevention,ibm zseries,reduced system downtime
Serviceability (structure),IBM,Computer science,Error prevention,Real-time computing,Upgrade,Error detection and correction,Downtime,Operating system,Reliability engineering,Firmware
Journal
Volume
Issue
ISSN
51
1/2
0018-8646
Citations 
PageRank 
References 
2
0.61
4
Authors
5
Name
Order
Citations
PageRank
Muehlbach, A.120.61
B. D. Valentine2237.70
D. Immel331.04
M. S. Bomar420.61
T. V. Bolan520.61