Modern VideoFilm Builds Fast-Paced, High-Volume Post Workflow on Harmonic MediaGrid(TM) Shared Storage Systems

Two MediaGrid System Installations Provide Performance and Capacity to Support Growing Multiplatform Delivery Operations

SAN JOSE, Calif. -- March 21, 2012 -- Harmonic Inc. (NASDAQ: HLIT) today announced that Modern VideoFilm has adopted MediaGrid(TM) shared storage systems to support high-volume preparation of movies and TV shows for redistribution by leading Web portals, and delivery to networks for mass distribution over satellite, cable, air, or the Web. The MediaGrid systems provide Modern VideoFilm with reliable, scalable storage, the high bandwidth necessary for fast media access, and the power and interoperability required to deliver a large volume of assets simultaneously to clients.

"MediaGrid was the only solution we found that could cost-effectively support multiple high-bandwidth streams at speeds high enough not to impact clients' loading of projects," said Modern VideoFilm Senior Engineer Bill Womack. "With easy scaling, agility in handling an enormous volume of content, and the capacity to do more work more efficiently, we're better equipped to fulfill existing contracts and to take on new clients and projects."

One MediaGrid system in Modern VideoFilm's Burbank, Calif., facility serves as an incoming and outgoing cache for content that is both delivered to and distributed from the facility via Signiant software over a fiber network. Content is uploaded to the system over the Signiant network at the rate of about 10 TB per day and then moved to a second MediaGrid for editing in place on Final Cut Pro® systems, transcoding in place, and quality control. The performance of these two MediaGrid systems, in conjunction with Signiant software, enables Modern VideoFilm to create and deliver more than 300 programs and features daily.

In a separate installation at Modern VideoFilm's Scottsdale, Ariz., facility, two additional MediaGrid systems are being used to receive and archive episodic content from the Warner Brothers digital library, and facilitate transcoding as required for delivery.

"The performance of MediaGrid's built-in scale out file system enables postproduction facilities such as Modern VideoFilm to handle a high volume of large incoming files from their clients, edit at high bit rates, transcode efficiently, and perform rapid QC before distributing finished files," said Ravi Parthasarathy, senior director, product line management, media storage at Harmonic. "Many post-production companies use expensive and complex SAN storage for meeting their performance needs. MediaGrid is an Ethernet-based storage alternative that delivers SAN-like performance with the simplicity of NAS."

Further information about the MediaGrid shared storage system and other Harmonic products is available at www.harmonicinc.com.

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About Harmonic Inc.

Harmonic Inc. (NASDAQ: HLIT) provides infrastructure that powers the video economy. The company enables content and service providers to efficiently create, prepare, and deliver differentiated video services for television and new media platforms. More information is available at www.harmonicinc.com.

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, including statements related to the anticipated capabilities and benefits of Harmonic's MediaGrid systems. Our expectations and beliefs regarding these matters may not materialize and are subject to risks and uncertainties, including the possibility that none of the MediaGrid systems meet some or all of its anticipated capabilities or provide some or all of its anticipated benefits, such as reliability, scalable storage, high bandwidth, power, interoperability, cost effectiveness, agility, capacity, speed, efficiency and SAN-like performance.

The forward-looking statements contained in this press release are also subject to other risks and uncertainties, such as those more fully described in Harmonic's filings with the Securities and Exchange Commission, including its Annual Report on Form 10-K for the year ended Dec. 31, 2011, its Quarterly Reports on Form 10-Q and its Current Reports on Form 8-K. The forward-looking statements in this press release are based on information available to Harmonic as of the date hereof, and Harmonic disclaims any obligation to update any forward-looking statements.

EDITOR'S NOTE - Product and company names used herein are trademarks or registered trademarks of their respective owners.

Photo Link: www.wallstcom.com/Harmonic/Modern.zip

Photo Caption: "Modern VideoFilm Senior Engineer Bill Womack with the Harmonic MediaGrid(TM) Shared Storage Systems."

ENDS