What does disk array ah?
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Users questions: What does disk array ah? My friends XP computer security can only SP1, SP2 security can not, they said the reason is disk array? ?
Experts answer: disk array disk array is to brief a number of hard disk drive in accordance with certain requirements to form a whole, the entire disk array by the array controller Management system. Redundant Disk Array RAID (RedundantArrayofIndependentDisks) technology in 1987 put forward by the University of California, Berkeley, developed the first purpose is to mix small, cheap disk to replace large expensive disk, dynasties Low-cost high-volume data storage (then known as RedundantArrayofInexpensiveDisks inexpensive RAID disk array), but also hope that the way of redundant information, so that disk failure does not make access to data by the loss, Congerkaifa A certain level of data protection technologies. Disk array RAID works with the characteristics of the basic structure is the combination of (Striping), bundling two or more physical disks into groups to form a single logical drive. Combination sets (StripingSet) refers to the physical disk group Bundled together. In the use of multiple disk drives, the combination can provide more than a single physical disk drive for better performance. Data is based on block (Chunks) set in the form of written composition, the block size is a fixed value, even before the implementation process in the selected bundle. Block size and average I * O demand determines the size of the relationship between the combination of sets of features. In general, select the block size of the objective is formulated to adequately improve the performance to suit the different characteristics of computing environments. Advantages of disk array disk array has many advantages: first, increased storage capacity; second, more than one disk drive can be Parallel efforts to enhance the data transfer rate; ... RAID technology does provide a higher than normal disk storage performance indicators, data integrity and data availability, especially in the face today I * O is always lagging behind the CPU performance bottlenecks in the case of more and more prominent, RAID solutions Case can effectively fill the gap.
Experts answer: disk array disk array is to brief a number of hard disk drive in accordance with certain requirements to form a whole, the entire disk array by the array controller Management system. Redundant Disk Array RAID (RedundantArrayofIndependentDisks) technology in 1987 put forward by the University of California, Berkeley, developed the first purpose is to mix small, cheap disk to replace large expensive disk, dynasties Low-cost high-volume data storage (then known as RedundantArrayofInexpensiveDisks inexpensive RAID disk array), but also hope that the way of redundant information, so that disk failure does not make access to data by the loss, Congerkaifa A certain level of data protection technologies. Disk array RAID works with the characteristics of the basic structure is the combination of (Striping), bundling two or more physical disks into groups to form a single logical drive. Combination sets (StripingSet) refers to the physical disk group Bundled together. In the use of multiple disk drives, the combination can provide more than a single physical disk drive for better performance. Data is based on block (Chunks) set in the form of written composition, the block size is a fixed value, even before the implementation process in the selected bundle. Block size and average I * O demand determines the size of the relationship between the combination of sets of features. In general, select the block size of the objective is formulated to adequately improve the performance to suit the different characteristics of computing environments. Advantages of disk array disk array has many advantages: first, increased storage capacity; second, more than one disk drive can be Parallel efforts to enhance the data transfer rate; ... RAID technology does provide a higher than normal disk storage performance indicators, data integrity and data availability, especially in the face today I * O is always lagging behind the CPU performance bottlenecks in the case of more and more prominent, RAID solutions Case can effectively fill the gap.
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