International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada / There are clear signs that data recorders using solid-state and disk-based technologies now represent a serious alternative to conventional linear and rotary tape recorders for a broad spectrum of data capture applications. As the number of RFQs specifying these so-called ‘new technology’ solutions increases, virtually every major manufacturer has responded with announcements of new off-the-shelf products. A NATO technical support team has even been tasked with drafting standards for certain aspects of solid-state and disk recorders. But what has caused this sudden explosion of interest? Strange to say, in almost every case it has been the perceived shortcomings of the new technologies which have forced the issue. For all their advantages, solid-state and disk recorders are essentially only temporary storage devices. To overcome this problem manufacturers have found it necessary to address the total data capture/storage/distribution/archiving scenario – with some interesting results. It is in the ‘data handling’ area therefore that some of the most significant advances are to be found. This Paper offers an overview of some of the new technology solutions now available - RAID (Redundant Arrays of Independent Disks), JBOD (Just a Bunch Of Disks) and FLASH memory recorders. New paradigms for airborne, mobile and laboratory data collection, handling, analysis and archiving are discussed, demonstrating that (for once) the migration path has been carefully thought through, with industry-standard data interfaces, true computer connectivity (Windows and UNIX) and familiar control techniques. It concludes that many users with a keen interest in replacing legacy products for whatever reason can now do so with confidence and minimal disruption to their day-to-day operation while nevertheless gaining access to the important benefits which ‘new technology’ solutions can offer.

RAID-6 is a data encoding scheme used to provide single drive error detection and dual drive error correction for data redundancy on an array of disks. Here we present a thorough study of efficient implementations of RAID-6 on field programmable gate arrays (FPGAs). Since RAID-6 relies heavily on Galois Field Algebra (GFA), an efficient implementation of a GFA FPGA library is also presented. Through rigorous performance analysis, this work shows the most efficient ways to tradeoff FPGA resources and execution time when implementing GFA functions as well as RAID-6 encoding and decoding.

O tema da razia de gado (boēlasía) é uma constante nos textos conservados da tradição épica grega arcaica, nos quais figura na forma de narrativas breves ou de referências alusivas. Apesar disso, pouco se escreveu acerca desse tema, e os poucos estudos realizados se concentraram apenas na consideração da recorrência boēlasía como um reflexo da importância do gado na economia da honra típica dos poemas homéricos ou na sua explicação como um derivado de estruturas míticas herdadas do protoindo-europeu. É justamente essa lacuna que esta tese se propõe a atacar, por meio da recolha e cotejo de parte das narrativas e referências homéricas a essa atividade e do seu exame a partir dos referenciais teóricos e metodológicos oriundos da crítica oralista do épos arcaico, particularmente os métodos de análise temática que partem da recepção dos poemas. / The cattle-raid (boēlasía) theme is a constant in the preserved texts of the tradition of Greek archaic epic, wherein it appears either in the form of brief narratives or of allusive references. Nonetheless, little has been written about this theme, and the few studies there are have focused only in the consideration of the recurrence of the boēlasía as a reflex of the importance of cattle in the honour economy typical of the homeric poems or in its explanation as a derivation of mythical structures inherited from the proto-indoeuropeans. This dissertation aims precisely at such blind spot, recovering and comparing part of the homerical references to this activity and examinig them via theoretical and methodological insights originated in the oralist critical tradition of the archaic épos, particularly those theme-based analytical methods that take into consideration the reception of the poems.

Redundant Arrays of Inexpensive Disks or RAID is a popular method of improving the reliability and performance of disk storage. Of various levels of RAID, mirrored or RAID1 and rotating parity or RAID5 configurations have become moat popular. Mirrored or RAID1 provides best overall performance and is easier to configure, but has 100 percent storage overhead for the redundancy. Rotating parity or RAID5, on the other hand, is quite inexpensive for the redundancy it provides, shorn impressive performance for reads and full-stripe writes in normal mode, but the small write performance is poor due to the read-modify-write cycle involved. The performance drops drastically when one of the disks fails and the system enters degraded mode. Also RAID5 is relatively difficult to configure. Typical non-scientific system disk access patterns exhibit very high locality of reference. This thesis presents the design and implementation of an Adaptive Hierarchical RAID array to exploit this high locality. Frequently accessed data is migrated towards the top of the hierarchy and not so frequently acee88ed data is moved down the hierarchy, thus adaptively rearranging itself to the access patterns. Previous work on Adaptive Hierarchical RAID such as HP AutoRAID has explored one part of the design space, namely design of configurable storage at the SGSI level with no interaction with higher level layers like volume manager. This thesis explores a different design point: namely, one that is centered at the volume manager layer. This is important also for the reason that with fibre channel disks and SCSI-3, Storage Area Networks (SAN) no longer need a conventional controller but a modified version of a controller that is more close to a volume manager.

O tema da razia de gado (boēlasía) é uma constante nos textos conservados da tradição épica grega arcaica, nos quais figura na forma de narrativas breves ou de referências alusivas. Apesar disso, pouco se escreveu acerca desse tema, e os poucos estudos realizados se concentraram apenas na consideração da recorrência boēlasía como um reflexo da importância do gado na economia da honra típica dos poemas homéricos ou na sua explicação como um derivado de estruturas míticas herdadas do protoindo-europeu. É justamente essa lacuna que esta tese se propõe a atacar, por meio da recolha e cotejo de parte das narrativas e referências homéricas a essa atividade e do seu exame a partir dos referenciais teóricos e metodológicos oriundos da crítica oralista do épos arcaico, particularmente os métodos de análise temática que partem da recepção dos poemas. / The cattle-raid (boēlasía) theme is a constant in the preserved texts of the tradition of Greek archaic epic, wherein it appears either in the form of brief narratives or of allusive references. Nonetheless, little has been written about this theme, and the few studies there are have focused only in the consideration of the recurrence of the boēlasía as a reflex of the importance of cattle in the honour economy typical of the homeric poems or in its explanation as a derivation of mythical structures inherited from the proto-indoeuropeans. This dissertation aims precisely at such blind spot, recovering and comparing part of the homerical references to this activity and examinig them via theoretical and methodological insights originated in the oralist critical tradition of the archaic épos, particularly those theme-based analytical methods that take into consideration the reception of the poems.

The diploma thesis is focused on the design of a backup system to increase the efficiency of working with stored data and increase the security of stored data. The analysis of the current state describes the company itself and also the backup system using the audit portal Zefis.cz. The following part describes the design of a new backup system that focuses on complexity using the cloud, magnetic tapes, and high server availability.

The diploma thesis deals with the problem of storage capacities of server discs in the allowance organization of Brno City Museum. The organization has long-lasting troubles with insufficient capacity of these discs. The aim of this thesis is to analyse the current state and to propose a suitable solution on the basis of the results of this analysis. Further, the suggested measures should be applied as well.

Thesis (M. Tech.) - Central University of Technology, Free State, 2011

International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Disk Recorders now represent a high performance, low cost and reliable alternative to traditional tape recorders for a wide range of platform data recording applications. This paper discusses the latest advances in disk-based recording technology in the context of multi-channel Telemetry applications, showing the degree of flexibility that is now possible in terms of both channel count and the ability to record synchronous and asynchronous digital data streams alongside multiple wideband analog channels. The techniques described are equally applicable to Acoustic, SIGINT and Telecommunications data capture and analysis applications aboard static, airborne and maritime platforms. Topics covered include how new disk-based data capture technologies have been able to extend bandwidth, storage capacity, signal fidelity and the overall capability of mission recorders. Advanced operational issues, including true ‘read-after-write’, data security, portability and archiving, enhanced data management and analysis strategies are also covered. The Paper includes detailed test results from COTS Disk Recorders already in service as well as an informative Road Map for this exciting new technology.

L'objectif de cette thèse est d'envisager la piraterie ancienne dans la longue durée, à la lumière des recherches menées par N. Purcell et P. Horden sur la Méditerranée antique. Elle s'appuie en premier lieu sur une étude des mots grecs et latins liés à la piraterie et de ses représentations dans les sources écrites anciennes. Ce travail est complété par une relecture de l'historiographie moderne qu'il est aussi nécessaire d'analyser dans son contexte historique afin d'écarter toutes les images afférant à notre notion. Alors qu'elle a été jusqu'à présent abordée dans un cadre événementiel, on entend mettre l'accent sur les structures du raid antique, en s'inscrivant dans le long terme. Ainsi, les pirates n'apparaissent plus seulement comme la face négative du commerce maritime, mais comme des agents d'échanges et de production de richesse. L'étude approfondie de deux régions de la Méditerranée (Cilicie, mer des Baléares) permet enfin de mettre en évidence les structures micro-locales et les dynamiques économiques, sociales, territoriales, géopolitiques qui ont permis et entretenu l'activité de prédation. Au terme de cette étude, nous proposons d'analyser la piraterie dans toute sa diversité grâce à une typologie nouvelle : le pirate imaginé, le pirate commerçant et le pirate opportuniste.