The GPFS technology application in the CCTV system that make and implementation

2. is fictitious the partition that change

System of business of economic channel programming asks to use the memory framework of open standard in the design, make a system OK memory of supportive layer class. The program was designed in this system asset of the online memery block that make, media is online buffer and the close line memery block that are based on data to shed tape library.

And GPFS partition changes management to be in those who store itself is to be changed logically, physics of and rather than is changed. The memory position of data file and indicator of position of data file itself are associated, this makes data file sheds mode to undertake between partition according to the job migratory when, not be real data the copy is migratory, however the change of content of indicator of position of data file itself.

Fictitious the character that changes partition makes we can mix data file itself the relation of working flow is detached, mean when needing to be designed in memory government technological process, mix working flow data file closely bind rise, because migratory managing,do not need bandwidth of the server leader performance of the server, network is restricted or the element such as safety is restricted, and raise cost. And be counted in the two class that GPFS stores get promoting considerably according to migratory efficiency. The meaning that through the graph 2 OK and simple expression a moment ago mentioned.

Graph 2

3. redundancy

GPFS is mixed to memory data itself on file structure watch the structure that file system itself is coexistence, this one characteristic makes visit and lock are decided to node it is practicable forever, so basic the possibility of breakdown of nonexistent only place, its security and dependability can have gotten assuring on file system level.

4. homogeneity

No matter client end is NIFS system or the file agreement of AFP system of the apple, or the system of CIFS, to GPFS such file system is told wait for a same sex, so they can visit GPFS file system with similar structure.

5. cache manages

The node of each GPFS has independent cache management space, make when different client end is visited through different node, have oneself cache space, make visit speed to rise greatly.

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