As the rapid development of virtualization technology, traditional data centers are gradually superseding physical machines with virtual machines (VMs) to provide services. Virtual machines hosting different applications (e.g. database server, mail server) run on the same physical host. Apart from improving hardware utilization, virtualization enables migrating applications seamlessly to a diff...

Existing storage disaggregation solutions all require remote host memory as a proxy to access storage devices. This creates a single bottleneck between CPU root complex and PCIe switch and induces too much DRAM footprint. Moreover, those software solutions introduce high tail latency due to commands batching, system interrupt and context switch. This latency overhead is non-trivial for fast NVM...

the relationship between female oviposition preference and offspring performance is a key area of study on the evolution of host specificity. this study investigates host prefer-ence of the polyphagous hover fly syrphus ribesii (diptera: syrphidae) and compares it with some components of its offspring`s performance. females and offspring were tested on six naturally used aphid hosts (blackberry...

In several scientific areas the use of large datasets is growing fast, e.g. data from High Energy experiments, Earth Observation, Astronomical Observation, and Biological databases. This requires the use of mass storage systems for managing these data. In grid environments user applications are not tied anymore to a particular system, but can run on a group of geographically distributed hosts. ...

Business requirements for data availability, survivability, and performance have driven the need for building the network storage that interconnects various kinds of storage devices to allow remote access by multiple hosts. A new revolutionary storage technology called “Object based Storage Devices (OSD)” is now emerging as a promising technology to meet the high performance needs and to addres...

The emerging mobile wireless environment poses exciting challenges for distributed fault tolerant (FT) computing. This paper proposes a message logging and recovery protocol on the top of Telecom Wireless CORBA and FT-CORBA architectures. It uses the storage available at the access bridge as the stable storage to log messages and checkpoints on behalf of a mobile host. Our approach engages both...

Virtualization allows computing resources to be utilized much more efficiently than those in traditional systems, and it is a strong driving force behind commoditizing computing infrastructure for providing cloud services. Unfortunately, the multiple layers of abstraction that virtualization introduces also complicate the proper understanding, accurate measurement, and effective management of s...

Host side caches use a form of storage faster than disk and less expensive than DRAM to deliver the speed demanded by data intensive applications. Today, this form of storage is NAND Flash, complementing a disk-based solution. A host side cache may integrate into an existing application seamlessly. This may be realized by using an infrastructure component (such as a storage stack middleware or ...

ion Solid-State Devices는 6가지 측면(system-level consumption)에서 유효하지 않음을 증명하였으며 이러한 문제점을 해결하기 위해 , Object-based Storage Device interface 사용을 제안함. 3/17 Presentation in Operating System Design Digital Media & Communication, Sanghoon, Jeon Background (1/3) • Block based Interface ◦ SATA : desktop용 host interface (Serial ATA) ◦ SAS : server용 host interface (Serial Attached SCSI) ◦ Fibre channel, PCIe :...