Emerging storage requirements, such as the need for block storage for both OpenStack VMs and file services like AFS and NFS, have motivated the development of a generic backend storage service for CERN IT. The goals for such a service include (a) vendor neutrality, (b) horizontal scalability with commodity hardware, (c) fault tolerance at the disk, host, and network levels, and (d) support for ...

iSCSI is proposed as a possible solution to building future storage systems. However, using iSCSI raises numerous questions about its implications on system performance. This lack of understanding of system I/O behavior in modern and future systems inhibits providing solutions at the architectural and system levels. First of all in this work, we try to understand the behavior of the application...

background opportunistic infections have become much more considerable in the last decades, especially in immunocompromised patients and due to the medical interventions. cryptosporidium is a pathogenic protozoan parasite causing diarrhea in children and some times acts as a life threatening opportunistic pathogen in the immunocompromised adults. objectives this study aimed to investigate the p...

In Ubiquitous computing environment the mobile devices such as PDAs necessarily connect to remote storage servers. We present an iSCSI caching system that localizes iSCSI target to overcome the shortcomings of iSCSI performance dropping sharply as the latency increases. 1 Motivation Mobile devices such as PDAs are evolving to be incorporated into Ubiquitous computing environment. Due to lightly...

Mistletoes are highly specialized perennial flowering plants adapted to parasitic life on aerial parts of their hosts. In our discussion on the physiological interactions between parasite and host, we focus on water relations, mineral nutrition, and the effect of host vigour. When host photosynthesis is greatest, the xylem water potential of the host is most negative. To maintain a flux gradien...

In this paper we describe a storage system called Violet that efficiently marries fine-grained host side data management with capacity optimized backend disk systems. Currently, for efficiency reasons, real-time analytics applications are forced to map their in-memory graph like data structures on to columnar databases or other intermediate disk friendly data structures when they are persisting...

peutic goal and the target of intensive basic and clinical research. Cellular repair of the human CNS poses significant scientific, translational, regulatory, and ethical issues. The challenges in the early trial design and implementation of stem cell–based transplantation to treat neurodegenerative disorders are measurable. Fortunately each area of cell transplantation therapy is being activel...

A covert channel is a mechanism that can be used to communicate data across network or between processes within the system by violating the networks/ systems security policy and in a manner that goes unnoticed. An effective covert channel is the one that is undetectable by the adversary and can provide high degree of privacy. The goal of the covert channel is to communicate data from one host t...