cDVR User Guide, Release 2.0
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Solution Overview - Functionality Description
•
NFS — Network File System
•
NFS4 — Network File System, version 4
•
Webdav Light — HTTP-based storage for Private Copy
Private
Copy
Content
Storage
Guidelines
The guidelines below are recommended for storage when making use of the cDVR Private Copy
feature.
•
HP Storage using Apollo 45xx servers is required;
•
Imagine Communications provides a customized ISO of applicable versions of CentOS;
•
Minimum of 10Gbps interfaces for storage nodes.
Just
In
Time
Packaging
(JITP)
Server
By converting recorded content on-the-fly, the JITP server provides multi-screen playback of the
recorded content to whatever client format requested, including: HLS, MSS, HDS and DASH. This
playback can be from assets recorded in the past or from live content that has been time-shifted (with
an end in the future). Clients can invoke playback modes including pause, fast-forward, and rewind.
Scaling
The architecture of JITP allows the operator to scale to many thousands of simultaneous client requests.
DRM
The JITP server has been integrated with many types of DRM and can extend to other DRM vendors as
needed. This capability allows operators to utilize their choice of encryption vendors and technologies.
Catch
Up
and
Restart
TV
Catch-up and Restart playback allows for non-linear Restart and Catch-Up TV by using a URL with an
appended start and stop time. Rather than using asset-based segments from the linear side, updates or
additions to packaging formats and DRMs are done on the JITP side. Thus, playback is done from the
continuous record buffer via the JITP.
Functionality
Description
This section provides a functionality description of the key cDVR solution features; it is not an all-
inclusive list.
Record
‐
level
Redundancy
In record-level redundancy, a Primary and Redundant Recorder are configured to provide active-muted
redundant recording from the RM. Both Recorders are concurrently recording content received from
