[email protected] (Anne & Lynn Wheeler) writes: > trivia: I had worked with Jim Gray at IBM SJR ... before he left for > Tandem. At Tandem he does a detailed analysis of failure modes, finding > that hardware was in the process of becoming significantly more reliable > ... and failures were starting to shift to human error, software bugs, > and environmental (power, acts of nature, etc) ... copy of summary from > that study > http://www.garlic.com/~lynn/grayft84.pdf
re: http://www.garlic.com/~lynn/2017c.html#13 Check out Massive Amazon cloud service outage disrupts sites http://www.garlic.com/~lynn/2017c.html#14 Check out Massive Amazon cloud service outage disrupts sites Amazon knocked AWS sites offline because of typo http://www.zdnet.com/article/amazon-knocked-aws-sites-offline-because-of-typo/ "Unfortunately, one of the inputs to the command was entered incorrectly and a larger set of servers was removed than intended." ... my wife was in gburg JES group when she was con'ed into going to POK to be in charge of loosely-coupled architecture. While there she did peer-coupled shared data architecture which saw little uptake (except for IMS hot-standby) until SYSPLEX and Parallel SYSPLEX. She didn't remain long, in part because of little uptake and in part because of constant battles with the communication group trying to force her into using SNA/VTAM for loosely-coupled operation. long after we had left IBM, we use to periodically drop in on the guy responsible for running one of the largest financial transaction networks. He attributed their 100% availability over extended period of time to * geographically separated, triple-replicated IMS hot-standby * automated operator ... aka human error. old reference to having done work on operator automation in the early 70s ... originally for running automated unattended benchmarking ... that included automated system reboot with possibly reconfiguration &/or different kernel, between each benchmark. http://www.garlic.com/~lynn/94.html#2 -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
