The groundbreaking WOS® Object Storage platform delivers a new paradigm for addressing the growth and management of unstructured data. With appliance-based hardware or software-only deployment options, WOS enables organizations to build highly reliable, infinitely scalable and cost-efficient storage repositories to meet any unstructured data need. Designed to meet the most demanding requirements, WOS possesses a powerful combination of high-performance, flexible protection, superior multi-site capabilities and storage efficiencies that make it the perfect solution for a wide range of use cases including:

  • Active Archive Repositories
  • Content Distribution
  • Distributed Collaboration Workflows
  • Enterprise Content Repositories
  • File Sync and Share
  • Geospatial Images and Video Surveillance
  • Scale-out Web and Cloud Services
  • Video Post-production

WOS is the most comprehensive object storage solution that is purpose-built to address the relentless growth of data in the most adaptable and efficient manner—all with the absolute minimum storage management required. Designed for a wide range of applications and use cases, WOS enables the creation of an almost limitless Exascale storage pool that exhibits predictable and reliable high-performance at any scale.

Significant Storage and Management Cost Reductions
WOS delivers ultra-low TCO by virtually eliminating the costs associated with administering and managing traditional file and block storage systems. There are no drive groups, logical volumes, RAID tuning, storage provisioning, load balancing or disruptive data migrations. Through simple administrator-defined policies, WOS presents a single scalable storage pool that easily and seamlessly scales to trillions of stored objects and an Exabyte of capacity. WOS policies provide full flexibility in configuring the protection and geographic location of data, allowing complex IT environments to optimize performance, data durability and content distribution simultaneously.

Comprehensive Archiving Tools

WOS ArchiveDirector delivers powerful and cost-effective archiving capabilities to a wide variety of storage targets. Read more…

The DDN WOS ArchiveDirector™ Archive Gateway enables a hybrid archive to a variety of repositories, delivering broad archiving capabilities to WOS and replication to tape or public cloud for disaster recovery—all on the server of your choice. Easily scalable from terabytes to multiple petabytes, ArchiveDirector’s software platform delivers supremely flexible management with the capability to archive a massive number of files using any storage including tape, optical, RDX, disk, object storage or cloud. For greater management efficiency, administrators have the ability to set automated policies to meet retention management requirements and overall business needs. ArchiveDirector also provides several strategies for data protection, such as deep archiving and offsite storage, ensuring user data is secure and will available at all times.

Not only does DDN provide the customer have the widest variety of targeting options, but also with the scalability, flexibility and low total cost of ownership throughout the lifecycle of your data. Pair ArchiveDirector with DDN DataMigrator and migrate data between any fi le system and storage platform to create a complete and cost-optimized end-to-end data-lifecycle management solution.

Physical / Virtual Server Requirements

  • 64 bit Windows or Linux
  • Intel Xeon E3 Quad Core 2.3GHz (or better)
  • 16GB or 32GB RAM (48GB or 64GB for PB and Multi PB) )
  • Redundant Power Supply)
  • 1Gbit or 10Gbit (preferred) Fast Ethernet)
  • Cache Interface Card – FC, SAS)


We developed WOS to support very large volumes of unstructured data with unlimited scalability. Read more…

We developed WOS to support very large volumes of unstructured data with unlimited scalability. WOS delivers the most intelligent capacity for any environment by offering scaling in three dimensions: the total volume of storage, the number of objects and the number of sites. Applications may not have high scalability requirements for all three dimensions initially, but over time those requirements can change due to external elements. To ensure you efficiently grow at every stage, WOS lets you start small and scale without boundaries. With WOS, a fully functional storage could can be deployed with a single node, and then seamlessly scale in all three dimensions by non-disruptively adding nodes, sites and applying or defining new storage management policies.

  • A single federated WOS namespace can be scaled to 32 trillion objects and more than an Exabyte of capacity
  • WOS deployments can start with a single node and seamlessly scale to over 8,000 nodes with predictable scale-out performance
  • WOS is 30% more space efficient than the competing solutions with up to 3.6 Petabytes of storage capacity per rack
  • The number of sites can be seamlessly scaled to meet changing requirements for collaborative workflows, content distribution or disaster recovery
  • With WOS, there are no forklift upgrades—when it's time to add capacity, you can simply add more nodes to the system


WOS enables even greater efficiencies to give you the ultra low TCO. Read more…

To overcome the challenges associated with unstructured data growth, WOS delivers the most cost-effective and efficient approach to managing the long-term storage of massive amounts of data. Designed for comprehensive efficiency across the storage environment, WOS enables organizations to scale their storage infrastructure while maintaining a low TCO.

Optimized CAPEX and OPEX: WOS reduces both CAPEX and OPEX with improved storage efficiency. With 15 to 20% better efficiency than file system based storage (object on Linux or NAS), WOS reduces power usage, floor space, improves network efficiency to preserves LAN and WAN bandwidth (no data rebuild traffic on network) and reduces the amount of storage administration effort (20+PB managed by a single full time employee). The cost savings can be as high as 60% compared to traditional (SAN/NAS) solutions.

Maximum Storage Utilization: At scale WOS, delivers a significantly lower cost per useable TB than file system based storage. WOS enables the customer to utilize a much higher percentage of the systems storage capacity, enabling up to 95% storage utilization with little to no performance degradation. Contrast this against file system based storage (object on Linux or NAS) that typically suffer significant performance lose at maximum utilization levels of just 75%.

Storage Tiering: WOS offers two very distinct levels of storage performance and cost, enabling you to implement a very efficient two-tiered storage strategy. The WOS7000 provides a performance tier while the WOS Capacity appliance provides a 30% lower cost optimized tier. The two-tiered approach allows customers to assign different categories of data to different tiers of storage in order to reduce total storage cost. Using WOS policies and flexible data protection schemes the customer can configure the data protection and storage efficiency based on the storage tier.

WOS Capacity Appliance: The WOS Capacity appliance is a capacity and cost optimized storage solution that maximizes storage capacity with 96 hot-swappable drives and a single single Object Storage Server (OSS) in just five rack-units (5U). Utilizing low cost 8TB SATA SMR drives specifically designed for archiving, the Capacity appliance provides 768TB of raw capacity and support for 8 Billion objects at an industry leading cost per TB.


WOS provides wide support for multiple protocols and applications to ensure any environment enjoys the benefits of object storage. Read more…


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WOS provides wide support for multiple protocols and applications to ensure any environment enjoys the benefits of object storage. With these criteria in mind, WOS was built from the ground up to ensure the fastest and most simple access to object storage anytime from anywhere. WOS delivers comprehensive access to object storage by providing integration with any application to support users anywhere in the world.

Powerful Metadata Search
WOS avoids scalability bottlenecks by storing metadata in key-value stores, rather than in scale-limiting metadata databases. A highly parallelized backend metadata search allows users to query up to seven indexed fields of user-specified metadata across all stored objects to quickly locate a single object among possibly trillions of objects.

Federated Global Namespace
WOS presents installed storage capacity as a single massive storage pool. Configurations can start as small as a single node and seamlessly scale to over 8,000 nodes in a single federated namespace that can be distributed across multiple geographic locations.

WOS Access
To meet any access requirement, DDN continually develops WOS to ensure integration via a wide range of protocols, making WOS easy to deploy with common applications and standard interfaces. By using a set of standard embedded interfaces and integrated gateways, WOS also allows legacy applications and cloud applications to use an object storage infrastructure, enabling you to realize all of the benefits of object storage without having to overhaul your environment.

WOS Access is a family of scale-out application interface options that provide highly available multi-protocol access into DDN’s WOS object storage platform. With plug and play simplicity and support for legacy NAS, emerging cloud and high performance parallel file systems interfaces, WOS Access enables organizations to select the interface methods that best meet their application needs and operational requirements. WOS Access delivers superior connectivity and unparalleled flexibility to support a broad set of use cases and help organizations simplify complex IT environments.

WOS Access provides flexibility in deployment choices:
  • Access Interface options are available integrated directly into WOS nodes to reduce complexity and simplify deployment
  • Discrete gateway appliances deliver independent scalability to achieve the highest possible performance and maxim storage efficiencies

Access S3/Swift allows organizations to deploy private or hybrid clouds leveraging the security, availability, scalability and global content distribution of WOS alongside the diverse and growing ecosystem of Amazon™ S3 and OpenStack® Swift compatible applications. Access S3/Swift delivers organizations ultra-low TCO by creating a single pool of object storage that supports a broad set of use cases along with a growing ecosystem of cloud enabled applications.

Access NFS/CIFS/SMB gives organizations with applications requiring file protocols the ability to leverage the benefits of WOS Object Storage with the familiar NFS and CIFS interfaces, enabling legacy applications and workflows for seamless integration with WOS. Access NFS/CIFS/SMB is also designed to enable multisite collaboration with a single federated namespace view across multiple geographically distributed WOS deployments. By using the intelligent WOS location-aware capability, users always access the closest data node to assure LAN performance in geographically distributed environments.

Access Bridge is a storage tiering solution with automated bi-directional data migration between DDN’s GRIDScaler™ parallel file system storage and WOS object storage. Access Bridge allows the native HSM functions of GRIDScaler to seamlessly extended to the limitless capacity and geo-distribution capabilities of WOS. When combined with Access NFS/CIFS, this solution creates a single globally federated namespace that spans multi-sites and GRIDScaler systems. By combining the distributed nature of WOS along with its scalability, performance and efficiency, Access Bridge extends a range of new use cases for existing GRIDScaler environments including GRIDScaler archiving, data distribution and worldwide collaboration.

WOS Connect Program
For IT organizations or independent software vendors (ISV) that are developing new applications, DDN’s WOS Connect program provides the tools, documentation and assistance to make it easy to integrate with native RESTful and Cloud API’s that are available with WOS.


WOS meets the performance demands for large data transfer and high throughput use cases. Read more…

WOS is designed for data distribution and collaboration with a powerful combination of a global namespace that provides a unified view of data regardless of location and policy-based data management that enables data locations and protection methods to be specified with just a few clicks. Performance is maximized with the WOS latency aware access manager that automatically retrieves data from the lowest latency source to maintain performance and availability in distributed environments. Additionally, WOS flexible data protection options enable the administrator to select object replication, local erasure code or distributed erasure code or any combination, to meet a wide range of latency, data durability and network efficiency requirements. Add to this simplified connectivity with WOS Access flexible multi-protocol interface options and it’s easy to understand how WOS makes the complex simple.


WOS has been meticulously designed to easily and reliably store Exabytes of your data in the simplest manner at the lowest cost. Read more…

For organizations concerned about total cost of ownership (TCO), most object storage platforms fall short when delivering comprehensive cost efficiencies for infrastructure, management and bandwidth. Many platforms are cost efficient in at least in one particular configuration, but only for limited use cases and for a very limited range of parameters.

WOS maximizes efficiency for any use case and gives you the most cost efficient infrastructure for mixed workloads of both large and small files. WOS offers the overall best efficiency, including infrastructure cost (raw storage, data center, etc.), management cost (how many people are required to manage the infrastructure) and bandwidth consumption.

True Object Storage Maximizes Efficiency
WOS began as a clean sheet of paper, designed as true object storage to overcome the limitations and of traditional block and file storage systems. WOS is enabled through DDN’s underlying NoFS™, (No File System) a flat single layer, address structure that minimizes read and write operations to disk and enables the system to deliver consistent and predictable performance regardless of object count or storage capacity.

WOS NoFS pure object architecture eliminates all file system overhead and utilizes 99% of disk capacity. The infinitely variable data buckets or “sector” sizes used by NoFS eliminate traditional file system waste and file fragmentation to deliver reliable performance and the highest possible storage utilization at any scale. This delivers the most cost efficient disk storage solution available for large volumes of unstructured data; offering as much as 20% better storage efficiency than object storage systems built on top of Linux file systems.

Highest Performance and Density Hardware Choices
WOS uniquely offers high-performance nodes and dense, high-capacity storage tier options for an ultra-efficient, cost effective object storage solution. The WOS7000 High Performance Appliance is designed to fully leverage all scalability and performance features of WOS while the WOS Capacity Appliance enables customers to store and protect massive quantities of unstructured data within the smallest footprint and at the lowest cost per TB.


Whether you're concerned about availability, durability or integrity, WOS offers full data protection with a range of protection schemes. Read more…

Whether you are building a low-cost archive or a high-performance storage cloud WOS delivers the necessary availability to weather any storm so your data is instantly available for access. WOS has been engineered to protect your data from corruption with up to fifteen 9's of durability; integrity assurance that your data will remain unchanged and the security to ensure your data cannot be tampered with.

Flexible Policy-Based Data Protection: WOS provides unparalleled options to fine tune data protection, enabling the system to concurrently support multiple application with varying performance, data durability and distribution requirements. Data protection options are policy driven and are applied at the object level.

Enhanced Data Protection: Continuous data integrity checks that systematically reads all objects and metadata to verify data integrity. The process automatically repairs corrupted objects to assure availability and maintain the integrity of the data.

Replication: Synchronous or asynchronous data replication provides variable data durability (based on the number of replicas) with the lowest latency impact, making it the best solution for high-speed access to large numbers of small objects.

ObjectAssure® Erasure Coding: Local erasure encoding, provides high data durability, no LAN traffic for data rebuilds, minimal latency impact, very good storage efficiency suitable for a wide range of use cases.

Replicated ObjectAssure: Synchronous or asynchronous replicated erasure encoding provides highest data durability, best solution for geographically distributed content requirements, no WAN traffic for local data rebuilds, minimal latency impact, good storage efficiency, preferred solution for content distribution, collaborative workflows and disaster recovery.

Global ObjectAssure: Distributed hierarchical erasure encoding for multisite deployments that require the lowest storage overhead, provides highest data durability, no WAN traffic for local data rebuilds, preferred solution for distributed environments, active archives and high data durability.

Self-Healing Architecture: ObjectAssure has self-healing capabilities that reduce the management effort. To prevent silent data corruption ObjectAssure employees a continuous background data scrub that detects and repairs media errors to maintain data durability. In case of a failed drive, ObjectAssure only has to reconstruct the actual data that was lost, as opposed to the entire disk. This dramatically improves data protection by reducing the rebuild window.

Reliable, Secure Global File Management: WOS is the only object storage platform that offers a choice of data protection mechanisms to ensure the highest data durability and availability. WOS Gateways leverage WOS object storage replication policies to provide data protection, disaster recovery and low latency access by applications in multiple, geographically distributed locations to enable a global workflow.


Explosive throughput and IOPS deliver faster ingest and high-octane application response for mixed-workloads and metadata. Read more…

When it comes to superior performance, you can expect the highest performing object storage from DDN. WOS delivers extreme performance optimization for millions of small files processed per second and up to TB/sec of large file throughput with the lowest network latency. To ensure the most comprehensive set of capabilities, WOS provides the highest performance results for throughput, IOPS and latency. A single WOS Cluster can provide up to 3 million IOPS and 300GB/s throughput (up to 32 clusters can be aggregated for higher performance). Additionally, the flexible data protection options of WOS further enhance overall system performance by conserving network bandwidth, minimizing latency and by providing rapid data recovery.

Optimized For Small and Large Files
Unlike other object storage platforms, WOS is optimized for both large and small objects. Most object storage platforms are not optimized for small objects, so IOPs tends to be neglected in performance conversations. WOS is the only object storage system that is optimized for high-speed throughput of large data volumes and super-fast I/O operations for small files. WOS allows you to mix KB and TB sized objects on a single high performance platform with greater disk efficiency.

Higher Performance for Large Files
Developed for video streaming, content distribution and other large data transfer or high throughput use cases, WOS performance enhancements deliver a significant reduction in latency and time to first byte of data for more predictable quality of service (QoS) for latency-sensitive applications.

The Most Efficient IOPS for Object Storage
With the highest throughput and IOPS, WOS enables faster ingest and application response for today’s mixed workloads and metadata. WOS NoFS is highly efficient with regard to disk I/O, requiring only one I/O per read and two I/Os per write. This model enables WOS to provide very high I/O rates for small files and very high throughput for large files. Large files are segmented and distributed across multiple drives to improve parallelism and throughput.

Increased Performance for File Access Protocols
WOS' cache-first architecture and solid state storage tier enables NAS interface performance to be scaled to meet application demands while providing low-latency global access to data stored in the WOS cloud, regardless of its location.

Latency-Aware Access Manager
WOS optimizes user response time through the use of a latency map to all storage nodes. In large environments with many storage nodes or in distributed environments, when multiple object instances are available WOS automatically retrieves an object from the storage node with the lowest latency.


WOS delivers peace of mind against the unwanted actions of unauthorized users. Read more…

IT organizations must remain vigilant of the constant threat of unauthorized access and data breaches from both internal and external attacker. Securing complex information infrastructure is a daunting challenge given the many avenues of ingress that can be taken. This is why WOS provides end-to-end data security from the application layer to the network connections between nodes with:

Connection Authentication: Provides a means to establish secure connections between applications and WOS to prevent unauthorized programmatic access to data

Hardened Management Layer: Assures that only authorized users have access to system utilities and that all management traffic is protected with SSL encryption

Secure System Communications: Strong 256 bit SSL data encryption protects all network traffic between all WOS system components and network nodes across the LAN/WAN to assure that data in-flight remains private and safe


With our Object Storage software & infrastructure, DDN enables high scalability, performance and efficiency
for global collaboration, distribution and active archives.