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this time, the third and fourth disks are idle. When B data is written to the third Disk in a certain band, and B data is checked in the fourth disk, in this way, both data a and data B can be read and written at the same time. VII. Raid 6 Raid 6 adds a verification area on the basis of RAID 5, each of which has two verification areas. They use an unused verification algorithm to improve data reliability. Next we will introduce several types of combined raid 1. raid01 The total number of disk

varmonths=["Jan", "Feb", "Mar", "APR", "may", "June", "Jul", "April", "Sep", "Oct", "Nov", "Dec"];functionFormatDate (time) {if(!Time ) { return""; } if(typeoftime== ' number '){ varD=NewDate (time); varDstr = ""; varMSTR = ""; if(D.getdate () ) {Dstr= "0" +d.getdate (); }Else{dstr=d.getdate (); } if(D.getmonth () //month should +1MSTR = "0" + (d.getmonth () +1); }Else{MSTR= (D.getmo

(mirrored)Under this architecture, if (RAID 0) A has a disk drive failure, (RAID 0) A is destroyed, of course, RAID 1 will still work, and if (RAID 0) b also has a disk drive failure, (RAID 0) b is destroyed, at this time the two disk drives of RAID 1 is a failure, the entire RAID 1 data is destroyed.Therefore, RAID

interface:We need to look at how the program itself is organized, that is, how we run the application, what it does throughout its life cycle, what the first line of code it executes, and what the last line of code is.In response, we give the following conclusions:1: Any C # application has a unique main function, which acts as an entry for the entire application;2: In the 12th, 14 lines of code is equivalent to the entire application of the first line and the last line of code;3: Complex appli

two people have the same birthday? (ignoring the fact that leap years, that is, 365 days a year)The probability of calculating certain things can often be converted to calculate their relative faces first. In this example, we can calculate the probability that everyone's birthdays are different, that is: 365/365 * 364/365 * 363/365 * ... * (365-49)/365, so that at least two people birthday the same probability is the value of this. public static double caculateprobability (int n) {

;Originally the subclass call is the parent class parameterless constructor, now write a parameter of the parent class constructor, the original non-parameter of the parent class constructor was killed, so cannot tune to the original parameterless constructor, so go to call the constructor of the argument, using the keyword: base ();Student s = new Student ("student", 18, ' Male ', 101);The object class is the base class for all classes; If you do not allow a class to inherit another class, the

command statementVariable takes effect:[Email protected] ~]# price=5[Email protected] ~]# echo "Price is $Price"Price is 5But if you want to show the price as $ $, and it conflicts with the variable, it's time to use the escape character \ Backslash[[email protected] ~]# echo "Price is $ $Price"Price is 6892Price[Email protected] ~]# echo "Price is \$ $Price"Price is $Use single quotation marks to escape all characters[Email protected] ~]# echo ' Price is \$ $Price 'Price is \$ $PriceUse "to ex

each group is exactly the same, but if the two disks in a group are broken, the entire raid 10 is broken, but this rarely happens, therefore, data security is still high. Raid 01: Raid 01 is now made of RAID 0 at the underlying layer, and then combines RAID 0 into RAID 1.