Company lists · Data refreshed September 2026
Top 25 Block storage providers based in the United States
RevenueBase identified 141 block storage providers headquartered in the United States as of September 2026 and tracks 44,596 professional contacts across them, including 12,904 with verified work emails. San Jose is the largest hub.
This list covers block storage providers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest block storage providers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 16,096 contacts → | ||||
Partial evidence “For more than 55 years, WD has built the storage infrastructure that powers the world’s data.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 15,173 contacts → | ||||
Partial evidence “Seagate is a leader in mass-capacity data storage.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 6,217 contacts → | ||||
Partial evidence “Pure Storage (NYSE: PSTG) uncomplicates data storage, forever.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 505 contacts → | ||||
Partial evidence “Infinidat, a Lenovo Company, offers an award-winning portfolio of primary and secondary storage platforms that provides best-in-class performance with guaranteed 100%…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 336 contacts → | ||||
Partial evidence “DataCore helps organizations modernize, protect, and get more value from their storage infrastructure across core data centers, edge locations, and cloud environments.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 304 contacts → | ||||
Partial evidence “UNICOM Engineering is a leading provider of server-based application platforms, storage solutions, and lifecycle support services for software technology developers, data center…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 204 contacts → | ||||
Partial evidence “Aivres is a data center servers and storage solutions provider committed to delivering innovative technologies that propel the world’s leading industries to new frontiers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 137 contacts → | ||||
Partial evidence “Tintri all-flash storage and software is specifically built for virtualized workloads.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 133 contacts → | ||||
Partial evidence “About Overland-Tandberg(TM) Founded in 1979 Overland-Tandberg provides “best in class” data storage and archive solutions that are reliable and mindfully built for the Enterprise…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 108 contacts → | ||||
Partial evidence “For 25 years, Nexsan has been at the forefront of developing world-class storage technologies and is now leading the way in redefining unified storage.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 105 contacts → | ||||
Partial evidence “StarWind is a pioneer in storage virtualization and hyperconvergence technologies.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 104 contacts → | ||||
Partial evidence “Portworx by Everpure is the cloud-native storage company that enterprises depend on to reduce the cost and complexity of rapidly deploying containerized applications across…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 82 contacts → | ||||
Strong evidence “Lightbits Labs® (Lightbits) is the inventor of the NVMe over TCP storage protocol, which is natively built into its industry-leading block storage, LightOS®, and the creator of…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 74 contacts → | ||||
Indirect evidence “SolidFire delivers an unstoppable force for data center transformation Together with NetApp, we’re accelerating customers’ transition to the next generation data center SolidFire…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 62 contacts → | ||||
Indirect evidence “Actifio virtualizes the data that’s the lifeblood of businesses in more than 30 countries around the world.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 60 contacts → | ||||
Strong evidence “Oracle has acquired Pillar Data Systems, a leading provider of innovative and highly scalable SAN Block I/O storage systems that provide exceptional performance scaling…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 59 contacts → | ||||
Partial evidence “VDURA delivers modern data storage infrastructure purpose-built for AI and high-performance computing.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 52 contacts → | ||||
Partial evidence “Open-E is a well-established developer of innovative IP-based data storage software used for building and managing centralized storage servers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 47 contacts → | ||||
Partial evidence “Panasas delivers software-defined storage solutions that redefine the industry standards for reliability, simplicity, and scalability in AI and HPC storage by eliminating…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 47 contacts → | ||||
Partial evidence “Nexenta is the market creator and leader in Open Software-Defined Storage (OpenSDS) software solutions for Hybrid and Multi Cloud enterprise environments via Nexenta AnyCloud…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 40 contacts → | ||||
Indirect evidence “We’re focused on accelerating our customers’ data access and applications to results previously unthinkable.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 39 contacts → | ||||
Partial evidence “StorONE is doing for storage what virtualization did for servers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 39 contacts → | ||||
Partial evidence “Aberdeen, your custom server and storage company, is a leading manufacturer of servers and storage for over 25 years.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 36 contacts → | ||||
Partial evidence “SwiftStack is a software-driven data storage and management platform for data-intensive applications and workflows, seamlessly providing access to data across the edge, core data…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 26 contacts → | ||||
Partial evidence “The most performant, dense, scalable, and flexible storage platform in the universe.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: block storage providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names block storage providers.
- Partial evidence
- Its own public description names part of block storage providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name block storage providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 141 block storage providers based in the United States
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Block storage providers based in the United States at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 141 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among block storage providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “block storage providers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names block storage providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among block storage providers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 12,904 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names block storage providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many block storage providers are there based in the United States?
RevenueBase identified 141 block storage providers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
WD, headquartered in San Jose, tops this list with the largest team on record.
Which city has the most block storage providers?
San Jose leads with 12 headquartered companies, followed by Santa Clara (9) and Sunnyvale (6).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 12,904 verified decision-maker contacts tracked across these 141 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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