Panasas
Panasas is a data storage company that creates network-attached storage for technical computing environments.

History 
Panasas is a computer data storage product company and is headquartered in San Jose, California. Panasas received seed funding from Mohr Davidow Ventures (MDV) and others. The first Panasas products were shipped in 2004, the same year that Victor M. Perez became CEO. Faye Pairman became CEO in 2011. Tom Shea, formerly Panasas COO, was appointed as CEO in 2020.

Technology 
Panasas developed an extension for managing parallel file access in the Network File System, which was later integrated in Parallel NFS (pNFS), part of the NFS version 4.1 specification, published by the Internet Engineering Task Force as RFC 5661 in January 2010. pNFS described a way for the NFS protocol to process file requests to multiple servers or storage devices at once, instead of handling the requests serially.

Panasas supports DirectFlow, NFS, Parallel NFS and Server Message Block (also known as CIFS) data access protocols to integrate into existing local area networks. Panasas blade servers manage metadata, serving data for DirectFlow, NFS and CIFS clients using 10 Gigabit Ethernet. Panasas systems provide data storage and management for high-performance applications in the biosciences, energy, media and entertainment, manufacturing, government and research sectors.

ActiveStor 
The ActiveStor product line is a parallel file system appliance that integrates hybrid storage hardware (hard drives and solid state drives), the PanFS parallel file system, its proprietary DirectFlow data access protocol, and the industry standard NFS and CIFS network protocols.

ActiveStor Ultra 
ActiveStor Ultra (introduced in November 2018) is the newest generation of the Panasas ActiveStor storage system and features a re-engineered, portable file system that delivers performance and reliability on suitably qualified, industry standard storage hardware platforms.

Each ActiveStor Ultra has four storage nodes, and each node has six HDD drive slots and two SSD drive slots. Each node supports six to eight HDDs or zero to two SSDs. Each ActiveStor Ultra can deliver 6-7.5 GB/s per 4U enclosure, depending on the configuration. With a minimum configuration of three ActiveStor Ultra enclosures, the total bandwidth performance is expected to be between 18-22 GB/s.

ActiveStor Ultra is designed for extreme performance and extreme scalability configurations and supports flexible networking options. The ActiveStor Ultra/PanFS 8 solution is aimed at HPC shops, as well as enterprises who need the kind of performance that parallel file systems can afford. For enterprise customers especially, the approach is intended to give them the kind of simplicity and low TCO that they demand.

ActiveStor 20 (now ActiveStor Classic) was announced in August 2016 with increased capacity, using larger and faster disks. In November 2017, Panasas released the ActiveStor Director 100 and the ActiveStor Hybrid 100 (now ActiveStor Prime), which disaggregated the Director Blade, the controller node of Panasas storage system, from the storage nodes. In November 2018, Panasas introduced ActiveStor Ultra, which featured a completely re-engineered portable file system (PanFS® 8) running on industry standard hardware.

DirectFlow
DirectFlow is a parallel data access protocol designed by Panasas for ActiveStor. DirectFlow avoids protocol I/O bottlenecks by accessing Panasas storage directly and in parallel. DirectFlow was originally supported on Linux, and expanded in April 2016 to support Apple's MacOS.

PanFS 
Panasas created the PanFS clustered file system as single pool of storage under a global filename space to support multiple applications and workflows in a single storage system. PanFS supports DirectFlow (pNFS), NFS and CIFS data access protocols simultaneously. PanFS 7.0 added a FreeBSD operating foundation and a GUI that supports asynchronous push notification of system changes without user interaction.

In November 2018, Panasas introduced PanFS 8, an intelligent, POSIX compliant parallel file system that incorporates the latest software innovations and runs on Linux to enable easy portability to new industry standard hardware. PanFS 8 includes the newly re-engineered Storage Node software stack for use on the new ActiveStor Ultra family of Storage Nodes.

PanFS is now theoretically portable across a much wider array of hardware, opening up the possibility of hosting the file system on third-party storage platforms. The file system’s portability also offers Panasas the flexibility to use different hardware suppliers for future versions of its own ActiveStor hardware – for both for the Director and storage modules. That has the advantage of keeping costs down, while potentially offering even more options for customers. PanFS 8 is optimized to match the object access and update patterns common in mixed workloads.

In August 2020, Panasas announced a new version of PanFS that features Dynamic Data Acceleration technology, which automatically tunes storage for small files and mixed workloads. While other storage systems assign data to media "tiers" based on how recently files were accessed, Dynamic Data Acceleration assigns data based on file size to most efficiently use the underlying media. The "novel" method is designed to improve performance, eliminate manual tuning and control storage costs.

PanFS 9 
In August 2021, PanFS 9 was released – the next-generation PanFS portable parallel file system, a major release to deliver customers performance enhancements, optimizations, and a multi-layer security foundation. Panasas designed these advancements to meet the demanding new requirements of HPC and AI/ML workloads while safeguarding sensitive and confidential data, and providing the underpinnings needed to deploy a secure multi-tenancy environment. PanFS 9 expanded the ActiveStor Ultra storage platform capabilities, adding substantial layers of security including hardware-based encryption at rest with zero performance degradation or cost impact, as well as file labeling support for Security-Enhanced Linux (SELinux), a set of Linux kernel security modifications that sets constraints on how files are accessed.

References

External links 
 Panasas Company web site
 Parallel NFS

Computer storage companies
Computer companies of the United States
Computer companies established in 1999
Technology companies based in the San Francisco Bay Area
Privately held companies based in California
Companies based in Sunnyvale, California
Network file systems
American companies established in 1999