Ceph as WAN Filesystem – Performance and Feasibility Study through Simulation

Recent development in object based distributed file systems (DFS) such as Ceph, GlusterFS as well as the more established ones like Lustre, GPFS, etc. have presented new opportunities to setup next generation of storage infrastructure for cloud computing, big data, and Internet of Things (IoT). However, existing DFSs are typically deployed to Local Area Network (LAN) and generally used for high-performance computing. Extending these DFSs into geographically distributed sites such as Campus Area Network (CAN) and Wide Area Network (WAN) for enterprise applications presents completely different set of challenges and issues. Unlike most implementations that choose a traditional multi sites deployment, i.e., each site implements a virtual storage (via LAN) and links through RESTful APIs (via WAN), we attempt to create a single virtual storage over WAN using Ceph. In this paper, we demonstrate that a properly designed and configured virtualized environment is a valuable tool for researchers to simulate a distributed files system over WAN without an actual physical environment.  By following a few guidelines, the read and write performance results in a simulated environment can indicate the trending of the read and write performance in the actual physical environment.  This implies that the storage design can be verified prior to actual deployment and establish a performance baseline. An obvious benefit is the initial investment of a storage solution is lower. Furthermore, this paper discuss about the challenges of setting up such environment, the feasibility of using Ceph as a single virtual store, and some possible future works

Estudio cualitativo de la relación de las leyes y la pericia informática en el Ecuador

Resumen: El presente trabajo analiza cualitativamente las leyes vigentes en el Ecuador relacionadas a los procesos de la pericia informática. Para aquello, se estudia los pasos empleados por un perito de la Policía Nacional en el desarrollo de los casos de delito informático, suscitados en el periodo 2012-2014, que implican la evidencia digital en: disco duros, cuentas de correo electrónico, redes sociales y motor de base datos. Apartir de los casos analizados, se puede concluir que la ley contempla una mayor cantidad de artículos relacionados a las bases de datos. Sin embargo, se tendría que analizar otros tipos de evidencia digital tales como: documentos de ofimática, imágenes digitales, ficheros de registros de actividad, memoria volátil, entre otros. Palabras Clave: Pericia Informática, evidencia digital, perito informático, Código Orgánico Integral Penal (COIP)

Laboratory directed research and development. Annual report, fiscal year 1995

This document is a compilation of the several research and development programs having been performed at the Pacific Northwest National Laboratory for the fiscal year 1995

Strategic Latency Unleashed: The Role of Technology in a Revisionist Global Order and the Implications for Special Operations Forces

The article of record may be found at https://cgsr.llnl.govThis work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory in part under Contract W-7405-Eng-48 and in part under Contract DE-AC52-07NA27344. The views and opinions of the author expressed herein do not necessarily state or reflect those of the United States government or Lawrence Livermore National Security, LLC. ISBN-978-1-952565-07-6 LCCN-2021901137 LLNL-BOOK-818513 TID-59693This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory in part under Contract W-7405-Eng-48 and in part under Contract DE-AC52-07NA27344. The views and opinions of the author expressed herein do not necessarily state or reflect those of the United States government or Lawrence Livermore National Security, LLC. ISBN-978-1-952565-07-6 LCCN-2021901137 LLNL-BOOK-818513 TID-5969