A key benefit of network-side recording of linearvideo content, or “Cloud DVR” (cDVR), is the ability tooffer and monetize extended storage capacity to subscribers.However, the market pressure to support 200 hours or moreof storage — combined with high-aggregate bandwidth ofmultiple adaptive-bitrate (ABR) mobile formats and theprivate copy ruling — makes storage cost a major concern.This paper will examine the characteristics of availablestorage technologies such as flash, spinning disks and tape,and will discuss optimal storage models for different usecases in terms of cost, capacity and throughput. Byrecognizing that not all cDVR content will be consumed inthe same way and that multiple types of storage technologycan be intelligently deployed on a per-asset basis, anopportunity exists to architect a solution that reducesstorage costs significantly. This demonstrates that state-ofthe-art cDVR implementations should manage assetlifecycles in such a way that assets can migrate betweendifferent storage tiers in order to optimize storage andstreaming costs.
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