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News Network File-Level Disk Array Real-Time Disaster Recovery Solution

Release Date:2012-09-14

Typical scenario

The solution applies to digital media applications with strict requirements on the stability of the storage system and continuity of services.
 

Traditional high-reliable storage network solution

In the broadcasting industry, given that a single point of failure in the entire storage system may cause a serious accident, the news network has strict requirements on the storage system's performance and reliability. The traditional non-linear editing storage network solution is FC SAN + SAN FS. The switch, metadata controller, disk RAID, power supply, network and disk array controller redundancy can be deployed to ensure the system's reliability. In terms of the whole system, the storage disk array is only protected by the controller redundancy. Therefore, the solution lacks a redundancy system. When the whole storage disk array fails and cannot be accessed, the production, editing and broadcasting of news will be largely affected, causing serious losses.


BWStor file-level disk array real-time disaster recovery solution
The solution adopts the BWmirror technology to solve the disk array failure problem. By providing the disk array redundancy function, the BWStor solution can meet application requirements on data safety and service continuity.


The typical configuration of the solution is shown in the following figure. The storage system comprises multiple disk arrays, which are managed by BWStor. In the BWStor management interface, all the disk arrays are divided into two groups. Mirror images are created between the two groups of disk arrays to provide redundancy; when data is written into the system, it will be concurrently written into both groups of disk arrays, thus ensuring the consistence of data in two disk array groups. When one disk array, or even a group of disk arrays fails and cannot be accessed, data of front-end services will be written into the redundancy disk arrays so that the data and services can remain unaffected by the failure. By synchronizing data on two disk array groups, the BWmirror technology can restore the failed disk arrays and provide redundancy. BWStor will access data from the disk arrays to ensure continuity of front-end services.


The disk array redundancy is realized by BWStor which the BWFS file system is embedded in. Therefore, when the entire disk array group fails, BWStor can automatically respond to the failure and ensure front-end services unaffected. 
 

 

 

 
Advantages


1. Based on the BWFS cluster file system, BWStor CSA5000 can provide disk array redundancy to ensure data and services unaffected by disk array failures. Therefore, front-end services will not be interrupted, meeting the non-linear editing network's high requirement on service continuity.

 


2. Because of the disaster recovery solution, full data redundancy is provided through mirror images and data is accessed from both disk array groups concurrently. When a disk array fails and cannot be accessed, the mirror image of the data will ensure the integrity of the data and provide the data service. When the failed disk array is recovered, the latest data can be synchronized into the recovered disk array to ensure the consistence between data in the two disk arrays.

 


3. The disk array redundancy is realized inside BWStor, which provides standard file access interfaces. It supports Windows, Linux and MAC operating systems. Non-linear editing software and application systems based on these operating systems can directly store files in the storage system under the protection of the BWmirror technology.

 


4. The BWStor file-level disk array real-time disaster recovery solution is applicable to all standard FC SAN and IP SAN devices. Therefore, the storage system can integrate all these disk arrays into a huge file storage and sharing space.