SafeVideo+
Application Scenario
As video surveillance systems increase in scale, demand for HD video and video networking has gradually grown. The requirement to store massive amounts of data greatly increases the risk of video clip loss. In practice, many video surveillance applications need to follow strict rules to ensure video data integrity. Once content is lost, it is difficult to recover it. Therefore, protection of hard disk data is crucial to the video surveillance system. How to effectively store and protect the massive amounts of data has become an essential question for customers.
Meanwhile, as video information increases rapidly, users have higher requirements on the mass data read/write capability of the video surveillance system.
The SafeVideo technology used by the VCN is an optimized streaming media storage and data protection technology based on disk blocks and can make full use of storage devices of the video surveillance system. SafeVideo has been used for streaming media storage in a variety of fields such as video surveillance
Customer Benefits
•Efficient data storage improves storage performance, prolongs the service life of disks, and greatly reduces the annual failure rate.
•Block file storage improves disk usage and reduces disk fragments.
•Bad sector replacement, readable and writable upon RAID failure, and load balancing ensure data storage reliability and reduce the probability of service interruptions caused by storage faults.
•Redundant recording storage adjusts disk usage as needed.
Functions
Table 1 lists the functions of this feature.
Table 1 Feature functions
Function
Description
Block storage
The physical space is divided into multiple logical file blocks of 1 GB each. Each file block is used to write data until it is full.
Efficient data storage
The data of each camera is written to a specified file block, preventing conflicts with the data writing of other cameras. This avoids multiple data checks caused by data writing of multiple cameras into one file block, improving data writing speed.
Bad sector replacement
The bad sector replacement technology divides the logical space of a disk into a storage area and reserved area. The reserved area occupies about 5% of the entire logical space. If a logical bad sector occurs on a disk, the reserved area is used for storage. This mitigates the effect of hard disk damage caused by the bad sector.
Plug and play
If a hard disk in a RAID group is faulty and is replaced with a new one, the VCN automatically identifies the new hard disk and adds it to the RAID group. The data in other functioning hard disks is all retained.
Readable and writable upon RAID failure
When multiple disks in RAID 5 are faulty, the VCN can continue to store and play back recordings as long as there is a functioning disk in RAID 5.
Redundant recording storage
Users can set a redundant storage duration. During the specified duration, recordings are stored in RAID 1 or RAID 5 mode. (In RAID 5 mode, recording data is redundantly stored in 1/N mode.) When the specified duration elapses, the system deletes redundantly stored recordings without deleting the original recording data.
Online capacity expansion
Disks can be directly added to a RAID 5 group online to expand the storage capacity without affecting the original recording.
Load balancing among RAID groups
The VCN30X0 supports 1 to 12 RAID 5 groups. When multiple RAID groups are configured, services in a faulty RAID group can be migrated to other functioning RAID groups.
for mail detail, can check in following page
https://support.huawei.com/hedex/hdx.do?lib=EDOC1100046473CEH10178&docid=EDOC1100046473&lang=en&v=03&tocLib=EDOC1100046473CEH10178&tocV=03&id=EN-US_TOPIC_0093031083&tocURL=resources%2fen%2dus%5ftopic%5f0093031083%2ehtml&p=t&fe=1&ui=3&keyword=safevideo&text=%25253Cb%25253ESafeVideo%25253C%25252Fb%25253E%252B
