Digital video surveillance solutions fall into two categories: surveillance digital video recorder systems (SDVR) and network digital video recorder systems (NDVR). These solutions in turn employ three distinct classes of storage topologies: direct-attached storage (DAS), network-attached storage (NAS) and storage area network (SAN).
Digital video surveillance solutions fall into two categories: surveillance digital video recorder systems (SDVR) and network digital video recorder systems (NDVR). These solutions in turn employ three distinct classes of storage topologies: direct-attached storage (DAS), network-attached storage (NAS) and storage area network (SAN).
DAS is the simplest storage topology and enables significant cost and space savings when exceptional capacity and scalability are not priorities. However, as surveillance solutions become more complex, they typically demand greater storage capacity and expandability than DAS can provide, requiring an external storage topology, such as NAS.
Utilizing the familiar TCP/IP transport protocol and Ethernet infrastructure, NAS enables companies to leverage their existing network infrastructure, thus lowering the cost of external network-accessible storage.
Larger-scale surveillance settings that require maximum capacity, accessibility and flexibility frequently turn to SANs. SAN topologies provide an infinitely scalable, centralized storage silo that can be utilized by any NDVR on the (Fibre Channel or iSCSI) network. A multitude of video cameras can stream to a multitude of NDVRs, and the resulting flood of data can be easily accommodated on the SAN.
Choosing the best topology for a given surveillance environment is fundamental to obtaining superior performance and value from a DVR-based solution. But selecting the optimal hard disk drives (HDD) for that solution will also play a key role in maximizing overall system effectiveness.
The HDDs you choose must address the unique challenges of digital video surveillance storage—from significant storage capacity challenges and multi-drive capable, network-based storage solutions, to comprehensive RAID/JBOD features and high rotational vibration tolerance.
Seagate has come up with enterprise surveillance solutions to meet the full spectrum of these rigorous requirements.
Best-Fit HDD—With Greater Video Data Privacy and Integrity
To avoid data breaches and ensuing customer notifications required by data privacy laws in some countries, corporations are constantly seeking ways to erase data on retired drives in case they fall into the wrong hands.
The Seagate Enterprise Capacity 3.5 HDD (formerly Constellation ES.3), with a Self-Encrypting Drive (SED) option and Seagate Instant Secure Erase (ISE), helps reduce IT hard drive retirement costs and also helps ensure that video data is protected.
With the SED feature, the Enterprise Capacity 3.5 HDD can encrypt all user data through a data encryption key stored securely on the drive itself. When it is time to retire or repurpose the drive, the owner simply sends a command to the drive to perform an ISE. This ISE feature is also available on the Constellation CS HDD.
Both drives are built for optimum performance in multi-drive configurations, such as JBOD and RAID systems. Additionally, they feature industry-leading RV tolerance for closely packed multi-drive system designs, boasting storage capacities of up to 4TB.
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