Product Reports Resources Pricing Login Book a demo
COMPANY PROFILE

ONStor

Explore full profile

Storage area network file service solutions for storage area networks that consolidate, manage and scale storage resources

Campbell, United StatesFounded 2000Other B2B Software
Valuation $0–100M Latest valuation · 2009
Headcount <100 Current team size
Total funding $50–100M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for ONStor and the history behind them.

About ONStor

ONStor, Inc. was a technology hardware company established in 2000, originally known as ClariStor Inc., and based in Campbell, California. The company was founded by Brian Stark and others in October 2000. Bob Miller served as the long-time CEO and chairman. Before his tenure at ONStor, Miller was the CEO of MIPS, where he led the company to an initial public offering, and held senior executive roles at Data General and IBM.

Read full description

The company specialized in clustered Network-Attached Storage (NAS) solutions designed to help enterprises manage the rapid growth of unstructured data. Its product line included NAS gateways, NAS systems, and unified storage systems. Specific products included the Bobcat arrays, Cougar NAS gateways with EverON software, and the Pantera products for iSCSI block and unified block/file storage. ONStor's solutions provided scalable, shared storage for Windows, UNIX, Linux, and Mac clients and servers. A key feature of their offerings was interoperability, allowing customers to use ONStor's NAS Gateways with a wide range of storage arrays from different vendors, thereby avoiding vendor lock-in. The business model focused on selling these hardware and software solutions to end-users through a global network of channel partners and original equipment manufacturers (OEMs). Key strategic partners included Hitachi Data Systems, 3PAR, IBM, and Fujitsu Computer Systems.

ONStor showed significant growth, reporting its third consecutive year of 100% revenue growth in early 2008. However, the company faced challenges during the economic recession. After raising over $130 million in venture capital from firms like Foundation Capital, Mayfield, and Worldview Technology Partners, ONStor was acquired by LSI Corporation on July 27, 2009, for approximately $25 million. The acquisition was seen as a way for LSI to enhance its capabilities in managing both unstructured and structured data. Following the acquisition, ONStor's technology was integrated into LSI's Engenio storage division. The ONStor brand and standalone gateways were eventually phased out.

Source: Dealroom company data

At a glance

Founded
2000
Headquarters
Campbell, United States
Sector
Other B2B Software

Latest news

Press, funding announcements and product moves mentioning ONStor.

See all news

Investors

6 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A3 investors entered at this stage

Series B and later3 investors entered at this stage

  • ComVentures
  • Fuse Capital
  • Sand Hill Capital
Team profiled 16 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 5 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
2 countries with
team presence
🇺🇸 United States66.7%
🇯🇵 Japan33.3%
2 countries shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about ONStor on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

See ONStor on the full Dealroom platform

Live deal flow, founder pedigree, hiring signals, revenue trajectory, and the full cap table.