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«©ARRIS 2014. All rights reserved. 2 INTRODUCTION Linear ad-insertion servers have as their primary function the scheduling and streaming of ad ...»

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For smaller caching ad-server deployments, a 45-day-equivalent storage cache will require up to 200 to 400 GB net (not including RAID and other overheads). Medium-sized systems will be well-served with approximately 500 GB to 1.0 TB of net storage. The largest systems could require 1 to 2 TB of net storage and will likely be clustered systems. For example, the ARRIS XMS-1U server with internal SSD storage matches ideally the needs of small systems, supporting up to 250 channels of streaming and 1.6 TB raw storage (RAID-10 redundancy yields a net cache storage size of 800 GB).

Likewise, the largest systems supporting channel counts in the thousands can be implemented using the ARRIS XMS-Flex server with internal SSD storage that yields up-to 4 TB raw cache storage (2 TB net). Comparing the storage capacities of these two servers with the requirements reflected in the analysis above will show that these capacities include significant headroom for growth and variability.

Caching mechanisms are offered in both of the ARRIS products mentioned above, by way of the “auto-delete” function, which implements the LRU algorithm used in the analysis above, along with accommodations for preserving space for yet-unused preloaded ads.

©ARRIS Enterprises, Inc. 2013 All rights reserved. No part of this publication may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from ARRIS Enterprises, Inc. (“ARRIS”). ARRIS reserves the right to revise this publication and to make changes in content from time to time without obligation on the part of ARRIS to provide notification of such revision or change. ARRIS and the ARRIS logo are all trademarks of ARRIS Enterprises, Inc. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and the names of their products. ARRIS disclaims proprietary interest in the marks and names of others. The capabilities, system requirements and/or compatibility with third-party products described herein are subject to change without notice.

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