I would like to share some personal thoughts. September 28th 2021, Oracle released the eleventh Exadata data machine called “X9M-2” (2 CPU sockets), X9M-8 (8 sockets) and ZDLRA X9M. Exadata is a computing platform to run Oracle RDBMS, zero data loss recovery appliance (ZDLRA) is a platform to backup Oracle RDBMS and based on Exadata hardware.
TL;DR If hardware stays inside your data center, it’s ok to secure erase storage devices. If it leaves your data center (decommission, move to another location), it’s best to physically destroy (shredder) it. Storage devices are not only hard drives, solid state drives, but also the ones holding data temporarily like memory modules (RAM) and CPUs (containing caches, register, …). As a consequence, do not sell used storage devices. Main reason to follow this advice…
Todays fastest possible interface for flash storage in terms of bandwidth and latency are DRAM sockets. Exadata X8M is the first Oracle engineered system using this technology that, according to first measurements taken by Oracle corporation, result in 200% read IO increase compared to Exadata X8. Summary from a presentation by Gavin Parish held at DOAG 2019 conference with a comment by Michael Wirz.
Oracle 19c, Oracle Cloud in numbers and pre-build environments on vagrant, docker and Oracle Linux Cloud Native environment, those were some of the topics at Open World Europe Conference in London. To see what’s behind with links to detailed sources, please read on.