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  • SML

    Cloud Storage Server



    In 2014, IDC estimated that 1.7MB of data was being generated every minute from every person on the planet. Annual data generation was expected to increase by 40 percent year on year over the next decade, total 44 zettabytes (one zettabyte equals one trillion gigabytes) by 2020! Enterprises are accumulating and analyzing data for customer insights and decision-making, which in turn are resulting in more data and metadata, creating a cycle of exponential growth.
    The cloud storage server requires a storage controller applied for the strict specification of RAID data protection, in order to build up a reasonable ROI for server storage system. The major functions list below:
  • Enables the server to boot directly from the RAID array, eliminating the need for specialized boot drives and protecting information
  • Allows IT managers to standardize on a single platform-agnostic controller that supports large, highly scalable drive pools to simplify storage expansion and management
  • Supports a wide range of RAID levels including RAID 6, RAID 50 and RAID 60 to accommodate growing business needs for data protection
  • Supports caching acceleration options for higher levels of RAID data protection to optimize performance.
  • Supports the use of solid state drives (SSDs) to cache and accelerate frequently accessed data, combining the benefits of high-performance SSDs and high-capacity HDDs.



  • SAS protocol was developed and maintained by T10 committee of ICITS (International Committee for Information Technology Standards), promoting by SCSITA (SCSI Trade Association)
  • SAS-1: 3.0 Gbit/s, introduced in 2004
  • SAS-2: 6.0 Gbit/s, available since February 2009
  • SAS-3: 12.0 Gbit/s, available since March 2013
  • SAS-4: 22.5 Gbit/s,under development and expected in 2017



    Direct Attached Storage (DAS)

    Figure 1: A Simple DAS Diagram



    Network Attached Storage (NAS)

    Figure 2: Simple NAS Architecture

    Storage Area Networks (SANs)

    Figure 3: Meshed SAN Architecture