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• Current and future bandwidth issues for IP Video surveillance.
• Some figures for real-world hard disk reliability – what the manufacturers don’t tell us.
• Why RAID5 is unsuited for surveillance recording, and an overview of other storage approaches better suited for reliable storage of evidence.
• The pros and cons of solid-state storage versus hard disk storage.
We demonstrate why the IP Video market is driven by increasing image resolution, recording rates and archive periods. We tackle the thorny issue of how storage systems are specified in enterprise projects, where evidential storage is critically important, and detail common misconceptions. We provide an overview of RAID systems and show why commonly specified RAID5 often produces exactly the opposite of what was desired. We look at new surveillance-specific hard disks, practical evidential transport solutions and briefly at the future of solid-state storage.
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