RAID 0 +1 disk series diagram

scale for Internet cafes, Internet cafes will also addition the number of computers, Internet clients likewise will be additional, the speed of data way server's hard drive ambition convert the current bottleneck, numerous customers started to complain almost the waiter on-demand videos more cards, issues such as upgrading the game slow, if I were you to take relevant measures, then eventually to inflate the business will be demolished.
So how to solve the bottleneck of disk access speed it? RAID arrays with multiple hard drives will be a better solution. However, many web deserving to the absence of practical experience, for only a ambiguous notion of RAID technology, especially the preparation of this article so small series, and shared with the basics and most usually accustomed RAID RAID 0 +1 set of instances.
RAID English full Redundant Array of Inexpensive Disks, Redundant Array of Inexpensive Disks translated into Chinese. It namely essentially composed using multiple physical drives one acceleration, automatic backup, file restore corrupted hard steer plausible functions.
mandate to encounter the needs of another work environments, RAID technology, RAID 0-7 calculate into the following co-eight kinds. Each array always have their own advantages and disadvantages, such as RAID 1 disk array emphasize data security,Asics Mexico 66 Baja, RAID 0 array for faster access, RAID 5 array of either speed and security. Here's a see at the characteristic specifics of commonly used array.
Common types of RAID arrays
RAID 0
RAID 0 array that is (Data Stripping) array of data points, the main feature is access to the data divided into the strip (stripped) distribution is stored in each physical disk. This management has the advantage of parallel access, resulting in double or multiple access speed. One of the most simple RAID 0 array, using two hard drives and double displacement rate, if the array card can aid multiple hard disk drives is RAID 0, so you can get N periods (N is joined to the array of hard drives) migrate speeds.
The drawback of this array is
data security is relatively languid, at a time the array one drive fails, all data will be lost. Thus, in order to speed the data vulnerability and a better balance among the actual use RAID 0 is routinely only two hard drives, to double the transmission speed in the meantime permanence in half for storage of movie on claim files, temporary files, etc. less demanding of safety data.
RAID 1
RAID 1 array namely is (Data Mirror) array of data mirroring, and its cardinal functions to cater a more superior data security. The whole array absences at least 2 hard drives set up in manuscript in the meantime to back up data to different hard drive, so even now an hard disk failure and data corruption, the file will no be lost. But its price is half of the array for real-time hard disk picture backup, hard drive capability of the array half of the absolute capacity and speed without whichever increase.
RAID 0 +1
for rapid access to the features of RAID 0 and RAID 1 data combines the avails of safety,Asics Ultimate 81, it also charted a RAID 0 +1 array. This array requires a minimum of four hard to build. Two of them hard to access the data, two hard drives for mirroring data. Two hard drives for storeroom of data is divided into strips collateral access, so you can get twice the speed of data access, while the other two drives in collateral is immediate access to the hard drive for the strip mirror, to ensure that any one disk fails, it will not occasion data loss.
as to take into list the access speed and data security, so this array in the Internet, is warmhearted used in small businesses.

RAID 3 and RAID 5
RAID 3 and RAID 5 uses parity data are stored, the inconsistency is that RAID 3 uses a dedicated physical hard disk to store equality data, and store data there are several hard drives working in parallel , if it is a hard disk for each data modification, calibration data disk will also follow the changes, which led to the parity disk workload is too cumbersome, the shock of data storage efficiency,Cheap Asics Shoes, while RAID 5 is just the opposite, it is to check slit into blocks of data stored on your hard drive at all so that you can solve the calibration data stored in the bottleneck.
RAID 5 array for the price is more expensive card, so this kind of array is currently only used in great companies, while the few Internet cafes used to be.
RAID 0 +1 combat
knowing of RAID array, the afterward on the Internet commonly used in RAID 0 +1 set as an example, graphs of the entire setup process.
1st to prepare four drives, a PCI card with a vacant or PCI-E slot of the computer (the interface along to different RAID card may be), a RAID card (if the motherboard has integrated the RAID card is not necessitated) . Figure 1
install RAID card apt the motherboard, 4 hard drive joined to the data interface above the RAID card. Turn aboard the microprocessor,Asics New Arrival, and in consensus with instructions to enter the RAID setup shade. This sample uses TRAK100 array card, use
into the RAID set up the environment, press 3 to select Figure 2

defined in the RAID window press Users can use the space bar to alternate to RAID mode, select here After setup is complete press Figure 3
Special notice is fewer than four hard drives using RAID 0 +1 can not set the mode, and will not emerge


set is complete, you can look the entire capacity of the hard disk 80G, which is based on characteristics of RAID 0 +1 functions acquired. It's the smallest hard disk capacity of the base double, because I use the hard drive is the smallest 40G, so set up is completed, capacity of 40G * 2,Asics Gel Kinsei 2, if you are using four 80G hard drive, then set the prototype results ought be 2 * 80G. Figure 4
Press Figure 5
restart the system, the results will exhibit the RAID setup, which contains the operating mode, the total capacity of the array size, and status. At this point, users can section the array, install the systems, software and other operations of the. For the operating system, an entire array is equivalent to a hard drive. Figure 6
if one drive fails, you just need to detect the marred hard drive,Asics Women's Gel Lyte III, and then in the meaning window, select RAID 2, Rebuild RAID array can be rebuilt.

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66499 2010 年 08 月 07 日 04:58 Reading (loading. ..) Comments (3) Category: Personal Diary



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