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Data Storage In The Information System

The rapid growth of data is a major trend in the development of modern IT systems. In addition to the increase in volumes, the significance of data has increased and, as a consequence, there is a need for uninterrupted access to data, for protection against accidents and disasters. However, the costs of data storage and the preservation of investment in infrastructure are also high. All these challenges are successfully addressed through the application of advanced design principles for storage systems, such as consolidation and virtualization of computing resources.
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Modern methods of data storage systems

To date, the following methods for establishing data storage systems have been disseminated through consolidation:
Системы хранения данных (СХД)
  • Data storage system by consolidation of blade storage devices and connectivity through storage network (Storage Area Network - SAN). Most popular protocols:
  • Fibre Channel (FC) - Special Block Protocol, high productivity and relatively high price
  • iSCSI is a protocol for the transfer of SCSI packages on traditional IP networks, more affordable alternatives to FC
  • Data storage system by consolidation of storage devices with direct connection to the data transmission network (Network Attached Storage - NAS). Most popular protocols supported by NAS Massives:
  • NFS = standard record of UNIX system file access
  • CIFS is a standard Windows system protocol

  • The data storage device may be a disk subsystem, a tape device or a device on magnetic disk.
    Either method of consolidation has both dignity and disadvantages. In many cases, it makes sense to combine all technologies to achieve the optimum cost of the solution.

    Which consolidates business storage

    In business terms, consolidation and virtualization of the data storage system provides a high adaptability of the IT system to the changing needs of the business, the lower cost of IT infrastructure, investment protection, increased availability of IT services, including through disaster and disaster protection, improved information security and many other benefits.
    Who is interested in implementing the data storage system first?
  • Financial structures. Storage of data related to cart processing and processing of financial transactions.
  • Telecommunication service providers. Storage of billing systems, CRM, CDR.
  • Large companies operating in competitive markets and actively using information systems such as ERP, MRP, warehouse, financial systems, etc.
  • Design offices. CAD/CAM systems project data, complex and costly modelling results.
  • Scientific organizations. Data on unique scientific experiments, satellite data, etc.
  • Classification of external data storage systems

    External data storage systems (ASC) can be classified according to several criteria:
  • Data detector
  • External interfaces
  • Market positioning
  • Data carriers in modern data storage systems (CCS) are:
  • Hard drives, most popular CD interfaces:
  • Fibre Channel (FC)
  • Serial ATA (S-ATA)
  • Serial SCSI (SAS)
  • SCSI
  • Magnetic tapes, most popular formats of CCB magnetic tapes:
  • Optical and magnetic disks:
  • The most common external interfaces (protocols) of CCB connections:
  • Fibre Channel
  • iSCSI
  • CIFS and NFS
  • Infiniband
  • In terms of market positioning of the data storage system (CCS) it is possible to be divided into three categories:

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