The D-Fusion series independently developed by Gushu Technology is a new generation of cluster storage system. It adopts open unified storage architecture and is based on PRODIGY storage file system designed for high performance environment. It is built for international leading performance and security. Easy-to-manage massive data storage management system to achieve efficient operation of enterprise information systems while reducing enterprise information maintenance costs。
        The D-Fusion 8000 Series is a high-end clustered network storage system for the National, Large Enterprise Computing Center and Commercial High Performance Computing (HPC) markets. It not only has the high performance, high reliability and scalability of enterprise storage, but is no less inferior to any enterprise storage in terms of function and application.。
        D-Fusion 8000 series products include: D-Fusion 8200，D-Fusion 8500。


Unified storage architecture
        The D-Fusion 8000 unified storage system can be composed of a single D-Fusion 8000 high-performance storage controller to form a single-controller storage system. It can also be composed of 2 to 24 high-performance storage controllers to form a high-availability cluster storage system. IP SAN or even FC SAN storage network；
        D-Fusion 8000 storage controller can provide GigE, 10GigE, FC, InfinibandVarious host interfaces, Ethernet interfaces support link aggregation(LACP Trunking)。The D-Fusion 8000 unified storage system provides optimized CIFS, NFS v2/v3/v4, FTP and HTTP access modes, and supports a mix of Linux, Unix, Windows, Solaris, IBM AIX and other operating systems in a TCP/IP network. Shared access to the environment。
        The D-Fusion 8000 unified storage system supports solid state drives (SSDs), FC disks, SAS disks, or SATA disks. It supports the mixing of different types of disks in a single system and supports hot swapping of disks.。
 
 International leading performance
        The D-Fusion 8000 single-controller system delivers 12GB/s of consistent bandwidth for over 800,000 OPS (operating operations per second), meeting the high-bandwidth performance requirements of high-performance business environments, and a large number of small Demanding OPS requirements in file processing, and such high performance can still be maintained with simultaneous access by thousands of client servers；
        The D-Fusion 8000 unified storage system uses a leading cluster storage architecture to increase the system bandwidth linearly by increasing the number of storage controllers. Currently, a D-Fusion 8200 cluster can stably support 24 storage controllers, which can achieve more than 100GB/s continuous bandwidth (access via NFS or CIFS) and more than 7,200,000 OPS. This makes the D-Fusion 8200 a high-end enterprise-class unified cluster storage system with excellent performance in the industry.；
        The D-Fusion 8000 unified storage system can meet the high bandwidth requirements of large file services, and can provide frequent reading, writing and requesting of large files and databases, and can easily open and access large directories containing more than 10 million files.。

Excellent expansionperformance
       The D-Fusion 8000 unified storage system has strong scalability. In terms of performance expansion, performance can be dynamically and linearly extended for each new D-Fusion 8000 storage controller in the core switch.；
       In terms of capacity expansion, the capacity of the D-Fusion 8000 system can reach 19PB, and the capacity expansion operation can be performed online. It only needs to access more fiber expansion disk cabinets in real time, and will not affect the existing business operations.。

High security and reliability性
        The reliability of the D-Fusion 8000 unified storage system exceeds 99.999%, which means that the annual downtime (including planned downtime) is less than 3 minutes. It provides reliability assurance measures from hardware, system and architecture.
Hardware layer
        All hardware components of the D-Fusion 8000 unified storage system, including controllers, power supplies, fans, and network connections, are redundantly designed.。
        The D-Fusion 8000 unified storage system uses real-time data checksum to automatically check and repair possible damaged sectors of the disk to ensure data integrity.。
System layer
        The D-Fusion 8000 unified storage system provides RAID 0, 1, 5, 6, 10, 50, 60 and other redundancy modes to support hot spare disks and automatic RAID reconstruction. D-Fusion RAID is created very fast, usually no more than 10 seconds. RAID 6 prevents data loss or corruption in the event of simultaneous damage to both disks. D-Fusion 8000s unique dynamic striping RAID technology also prevents RAID“Write vulnerability”Phenomenon occurs;
       The D-Fusion 8000 uses the PRODIGY-UP file system to be very robust, maintaining consistency even in extreme situations such as sudden power outages or system crashes, and automatically recovers quickly when the system is rebooted. The D-Fusion 8000 does not have a separate metadata server. All metadata is managed by the controller and distributed on disk for the same reliability protection as the data. This approach is far more reliable than a separate metadata server, because the latter interrupts the business when the metadata server crashes, and it takes a long time to complete a file system consistency check task like fsck, and more serious because of metadata. Get full recovery and cause some or all of the data to be corrupted or lost。
Architecture layer
       Multiple D-Fusion 8000 storage controllers are interconnected to form a high-availability cluster. The cluster working mode is Active-Active, that is, all controllers can provide data access at the same time, and the traditional active/standby mode (Active- Compared to Standby), the performance of data storage is significantly improved. At the same time, the two or more controllers are hot standby, and any one of them fails, and the other can automatically and continuously take over the task of the fault controller and the data managed, and this is completely taken over. The process is completely transparent to the client. This guarantees 7x24 business continuity. Other manufacturers“NAS gateway + SAN array structure, most of them can only do SAN array dual control mutual backup, but can not achieve mutual backup of NAS gateway。

Multi-level data protection scheme
        The D-Fusion 8000 Unified Storage System delivers enterprise-class, advanced data protection solutions through integrated free or licensed software, including：
        Snapshot: File system-based advanced snapshot MagicShot for local disk backup and fast recovery with less impact on system performance and space;
        Cloning: File system-based copy of instant writable data volume, MagiClone, which impacts system performance and space, saving test and development time；
        Local backup: Provides NDMP protocol with Commvault, Veritas, Bakbone and other backup servers to implement LAN-free centralized incremental backup of data from D-Fusion system to tape library.；
        Remote disaster recovery: MagicMirror performs near-synchronous disaster recovery and recovery through LAN or WAN;
        Storage Encryption: MagicVault supports high-performance encryption and global key management to protect confidential information even when data is stolen. Real-time encryption ensures data security inside the storage system, even if the disk is lost。

Thin provisioning and space management
        The D-Fusion 8000 storage controller virtualizes all storage space into a shared mass storage pool. As long as there is access, all spatial resources and data can be shared by any front-end computing node or application server. Users do not need to manage any underlying devices separately, such as disks, RAID, or logical volumes (LUNs)；
       The D-Fusion 8000 unified storage system supports the automatic thin provisioning function to dynamically expand the volume size without the need for a preset volume capacity, which does not affect system operation and greatly improves space utilization.
       D-Fusion 8000s virtualized unified storage pool technology combined with thin provisioning technology greatly improves space utilization, and effectively avoids copying and copying of data through high-performance data sharing services and space-consuming snapshot and clone services. In general, D-Fusion 8000 can save at least 30-50% storage space compared to other manufacturers storage systems, thus protecting customer investment more effectively.；
       D-Fusion 8000 provides secure access management under Linux or Windows, as well as capacity quota management at the user, directory, and file volume levels.；

Hybrid storage and tiered storage management
        Although the D-Fusion 8000 virtualizes all storage space into a shared mass storage pool, you can configure different types of hard disks in the same storage system, including SSD, FC, SAS, and SATA.；
       The D-Fusion 8000 unified storage system can deploy automatic data migration and hierarchical storage management between spatial regions of two or more different disk types. More frequently accessed data is stored in the SSD cache area with near zero latency efficiency, while relatively low access data is stored in high throughput, high capacity, lower cost SATA disk storage. At the same time, client access is always transparent, no matter where the data is stored.。

Humanized and easy to manage
        The installation and deployment of the D-Fusion 8000 is“Plug and play”the way. Simply connect the Gigabit/10 Gigabit interface of the D-Fusion 8000 controller to the core IP switch through a standard network cable, configure a simple IP address, and configure LACP link aggregation. At the same time, connect the FC interface to the expansion disk enclosure. LUNs, you can start to provide unified sharing of high-performance data services；
        All the compute nodes and client servers on the front end do not need to install any client software. Non-Windows servers only need to do a simple NFS mount. Windows servers can share the global space and data resources of the D-Fusion system by mapping the network hard disk through the CIFS protocol. . Users do not need to set up and configure any I/O node server and metadata server. The entire installation process takes less than 30 minutes.；
        The D-Fusion 8000 storage system provides a concise GUI graphical management interface and CLI command line interface for local or remote maintenance. Provides a series of enterprise-level management functions such as automatic RAID management, system status real-time monitoring and alarm, remote log, and secure network settings, greatly reducing system management and maintenance burden。

        In summary, the companys D-Fusion 8000 series products have high performance, scalability, and reliability compared to similar products in the industry. Meet the demanding workload requirements of environments such as massive data storage and high-performance computing, while providing enterprise-class versatility, improving business operational efficiency and reducing costs。